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2 LINUX ALLOCATED DEVICES (2.6+ version)
4 Maintained by Alan Cox <device@lanana.org>
6 Last revised: 6th April 2009
8 This list is the Linux Device List, the official registry of allocated
9 device numbers and /dev directory nodes for the Linux operating
10 system.
12 The latest version of this list is available from
13 http://www.lanana.org/docs/device-list/ or
14 ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
15 newer than the one distributed with the Linux kernel.
17 The LaTeX version of this document is no longer maintained.
19 This document is included by reference into the Filesystem Hierarchy
20 Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
22 Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23 platform only. Allocations marked (68k/Atari) apply to Linux/68k on
24 the Atari platform only.
26 The symbol {2.6} means the allocation is obsolete and scheduled for
27 removal once kernel version 2.6 (or equivalent) is released. Some of these
28 allocations have already been removed.
30 This document is in the public domain. The author requests, however,
31 that semantically altered versions are not distributed without
32 permission of the author, assuming the author can be contacted without
33 an unreasonable effort.
35 In particular, please don't sent patches for this list to Linus, at
36 least not without contacting me first.
38 I do not have any information about these devices beyond what appears
39 on this list. Any such information requests will be deleted without
40 reply.
43 **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
45 To have a major number allocated, or a minor number in situations
46 where that applies (e.g. busmice), please contact me with the
47 appropriate device information. Also, if you have additional
48 information regarding any of the devices listed below, or if I have
49 made a mistake, I would greatly appreciate a note.
51 I do, however, make a few requests about the nature of your report.
52 This is necessary for me to be able to keep this list up to date and
53 correct in a timely manner. First of all, *please* send it to the
54 correct address... <device@lanana.org>. I receive hundreds of email
55 messages a day, so mail sent to other addresses may very well get lost
56 in the avalanche. Please put in a descriptive subject, so I can find
57 your mail again should I need to. Too many people send me email
58 saying just "device number request" in the subject.
60 Second, please include a description of the device *in the same format
61 as this list*. The reason for this is that it is the only way I have
62 found to ensure I have all the requisite information to publish your
63 device and avoid conflicts.
65 Third, please don't assume that the distributed version of the list is
66 up to date. Due to the number of registrations I have to maintain it
67 in "batch mode", so there is likely additional registrations that
68 haven't been listed yet.
70 Fourth, remember that Linux now has extensive support for dynamic allocation
71 of device numbering and can use sysfs and udev to handle the naming needs.
72 There are still some exceptions in the serial and boot device area. Before
73 asking for a device number make sure you actually need one.
75 Finally, sometimes I have to play "namespace police." Please don't be
76 offended. I often get submissions for /dev names that would be bound
77 to cause conflicts down the road. I am trying to avoid getting in a
78 situation where we would have to suffer an incompatible forward
79 change. Therefore, please consult with me *before* you make your
80 device names and numbers in any way public, at least to the point
81 where it would be at all difficult to get them changed.
83 Your cooperation is appreciated.
86 0 Unnamed devices (e.g. non-device mounts)
87 0 = reserved as null device number
88 See block major 144, 145, 146 for expansion areas.
90 1 char Memory devices
91 1 = /dev/mem Physical memory access
92 2 = /dev/kmem Kernel virtual memory access
93 3 = /dev/null Null device
94 4 = /dev/port I/O port access
95 5 = /dev/zero Null byte source
96 6 = /dev/core OBSOLETE - replaced by /proc/kcore
97 7 = /dev/full Returns ENOSPC on write
98 8 = /dev/random Nondeterministic random number gen.
99 9 = /dev/urandom Faster, less secure random number gen.
100 10 = /dev/aio Asynchronous I/O notification interface
101 11 = /dev/kmsg Writes to this come out as printk's
102 12 = /dev/oldmem Used by crashdump kernels to access
103 the memory of the kernel that crashed.
105 1 block RAM disk
106 0 = /dev/ram0 First RAM disk
107 1 = /dev/ram1 Second RAM disk
108 ...
109 250 = /dev/initrd Initial RAM disk
111 Older kernels had /dev/ramdisk (1, 1) here.
112 /dev/initrd refers to a RAM disk which was preloaded
113 by the boot loader; newer kernels use /dev/ram0 for
114 the initrd.
116 2 char Pseudo-TTY masters
117 0 = /dev/ptyp0 First PTY master
118 1 = /dev/ptyp1 Second PTY master
119 ...
120 255 = /dev/ptyef 256th PTY master
122 Pseudo-tty's are named as follows:
123 * Masters are "pty", slaves are "tty";
124 * the fourth letter is one of pqrstuvwxyzabcde indicating
125 the 1st through 16th series of 16 pseudo-ttys each, and
126 * the fifth letter is one of 0123456789abcdef indicating
127 the position within the series.
129 These are the old-style (BSD) PTY devices; Unix98
130 devices are on major 128 and above and use the PTY
131 master multiplex (/dev/ptmx) to acquire a PTY on
132 demand.
134 2 block Floppy disks
135 0 = /dev/fd0 Controller 0, drive 0, autodetect
136 1 = /dev/fd1 Controller 0, drive 1, autodetect
137 2 = /dev/fd2 Controller 0, drive 2, autodetect
138 3 = /dev/fd3 Controller 0, drive 3, autodetect
139 128 = /dev/fd4 Controller 1, drive 0, autodetect
140 129 = /dev/fd5 Controller 1, drive 1, autodetect
141 130 = /dev/fd6 Controller 1, drive 2, autodetect
142 131 = /dev/fd7 Controller 1, drive 3, autodetect
144 To specify format, add to the autodetect device number:
145 0 = /dev/fd? Autodetect format
146 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
147 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
148 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
149 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
150 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
151 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
152 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
153 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
154 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
155 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
156 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
158 12 = /dev/fd?u360 3.5" 360K Double Density(2)
159 16 = /dev/fd?u720 3.5" 720K Double Density(1)
160 120 = /dev/fd?u800 3.5" 800K Double Density(2)
161 52 = /dev/fd?u820 3.5" 820K Double Density
162 68 = /dev/fd?u830 3.5" 830K Double Density
163 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
164 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
165 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
166 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
167 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
168 60 = /dev/fd?u1722 3.5" 1722K High Density
169 76 = /dev/fd?u1743 3.5" 1743K High Density
170 96 = /dev/fd?u1760 3.5" 1760K High Density
171 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
172 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
173 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
174 104 = /dev/fd?u3200 3.5" 3200K Extra Density
175 108 = /dev/fd?u3520 3.5" 3520K Extra Density
176 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
178 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
180 (1) Autodetectable format
181 (2) Autodetectable format in a Double Density (720K) drive only
182 (3) Autodetectable format in a High Density (1440K) drive only
184 NOTE: The letter in the device name (d, q, h or u)
185 signifies the type of drive: 5.25" Double Density (d),
186 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
187 (any model, u). The use of the capital letters D, H
188 and E for the 3.5" models have been deprecated, since
189 the drive type is insignificant for these devices.
191 3 char Pseudo-TTY slaves
192 0 = /dev/ttyp0 First PTY slave
193 1 = /dev/ttyp1 Second PTY slave
194 ...
195 255 = /dev/ttyef 256th PTY slave
197 These are the old-style (BSD) PTY devices; Unix98
198 devices are on major 136 and above.
200 3 block First MFM, RLL and IDE hard disk/CD-ROM interface
201 0 = /dev/hda Master: whole disk (or CD-ROM)
202 64 = /dev/hdb Slave: whole disk (or CD-ROM)
204 For partitions, add to the whole disk device number:
205 0 = /dev/hd? Whole disk
206 1 = /dev/hd?1 First partition
207 2 = /dev/hd?2 Second partition
208 ...
209 63 = /dev/hd?63 63rd partition
211 For Linux/i386, partitions 1-4 are the primary
212 partitions, and 5 and above are logical partitions.
213 Other versions of Linux use partitioning schemes
214 appropriate to their respective architectures.
216 4 char TTY devices
217 0 = /dev/tty0 Current virtual console
219 1 = /dev/tty1 First virtual console
220 ...
221 63 = /dev/tty63 63rd virtual console
222 64 = /dev/ttyS0 First UART serial port
223 ...
224 255 = /dev/ttyS191 192nd UART serial port
226 UART serial ports refer to 8250/16450/16550 series devices.
228 Older versions of the Linux kernel used this major
229 number for BSD PTY devices. As of Linux 2.1.115, this
230 is no longer supported. Use major numbers 2 and 3.
232 4 block Aliases for dynamically allocated major devices to be used
233 when its not possible to create the real device nodes
234 because the root filesystem is mounted read-only.
236 0 = /dev/root
238 5 char Alternate TTY devices
239 0 = /dev/tty Current TTY device
240 1 = /dev/console System console
241 2 = /dev/ptmx PTY master multiplex
242 64 = /dev/cua0 Callout device for ttyS0
243 ...
244 255 = /dev/cua191 Callout device for ttyS191
246 (5,1) is /dev/console starting with Linux 2.1.71. See
247 the section on terminal devices for more information
248 on /dev/console.
250 6 char Parallel printer devices
251 0 = /dev/lp0 Parallel printer on parport0
252 1 = /dev/lp1 Parallel printer on parport1
253 ...
255 Current Linux kernels no longer have a fixed mapping
256 between parallel ports and I/O addresses. Instead,
257 they are redirected through the parport multiplex layer.
259 7 char Virtual console capture devices
260 0 = /dev/vcs Current vc text contents
261 1 = /dev/vcs1 tty1 text contents
262 ...
263 63 = /dev/vcs63 tty63 text contents
264 128 = /dev/vcsa Current vc text/attribute contents
265 129 = /dev/vcsa1 tty1 text/attribute contents
266 ...
267 191 = /dev/vcsa63 tty63 text/attribute contents
269 NOTE: These devices permit both read and write access.
271 7 block Loopback devices
272 0 = /dev/loop0 First loop device
273 1 = /dev/loop1 Second loop device
274 ...
276 The loop devices are used to mount filesystems not
277 associated with block devices. The binding to the
278 loop devices is handled by mount(8) or losetup(8).
280 8 block SCSI disk devices (0-15)
281 0 = /dev/sda First SCSI disk whole disk
282 16 = /dev/sdb Second SCSI disk whole disk
283 32 = /dev/sdc Third SCSI disk whole disk
284 ...
285 240 = /dev/sdp Sixteenth SCSI disk whole disk
287 Partitions are handled in the same way as for IDE
288 disks (see major number 3) except that the limit on
289 partitions is 15.
291 9 char SCSI tape devices
292 0 = /dev/st0 First SCSI tape, mode 0
293 1 = /dev/st1 Second SCSI tape, mode 0
294 ...
295 32 = /dev/st0l First SCSI tape, mode 1
296 33 = /dev/st1l Second SCSI tape, mode 1
297 ...
298 64 = /dev/st0m First SCSI tape, mode 2
299 65 = /dev/st1m Second SCSI tape, mode 2
300 ...
301 96 = /dev/st0a First SCSI tape, mode 3
302 97 = /dev/st1a Second SCSI tape, mode 3
303 ...
304 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
305 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
306 ...
307 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
308 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
309 ...
310 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
311 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
312 ...
313 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
314 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
315 ...
317 "No rewind" refers to the omission of the default
318 automatic rewind on device close. The MTREW or MTOFFL
319 ioctl()'s can be used to rewind the tape regardless of
320 the device used to access it.
322 9 block Metadisk (RAID) devices
323 0 = /dev/md0 First metadisk group
324 1 = /dev/md1 Second metadisk group
325 ...
327 The metadisk driver is used to span a
328 filesystem across multiple physical disks.
330 10 char Non-serial mice, misc features
331 0 = /dev/logibm Logitech bus mouse
332 1 = /dev/psaux PS/2-style mouse port
333 2 = /dev/inportbm Microsoft Inport bus mouse
334 3 = /dev/atibm ATI XL bus mouse
335 4 = /dev/jbm J-mouse
336 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
337 5 = /dev/atarimouse Atari mouse
338 6 = /dev/sunmouse Sun mouse
339 7 = /dev/amigamouse1 Second Amiga mouse
340 8 = /dev/smouse Simple serial mouse driver
341 9 = /dev/pc110pad IBM PC-110 digitizer pad
342 10 = /dev/adbmouse Apple Desktop Bus mouse
343 11 = /dev/vrtpanel Vr41xx embedded touch panel
344 13 = /dev/vpcmouse Connectix Virtual PC Mouse
345 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
346 15 = /dev/touchscreen/mk712 MK712 touchscreen
347 128 = /dev/beep Fancy beep device
348 129 =
349 130 = /dev/watchdog Watchdog timer port
350 131 = /dev/temperature Machine internal temperature
351 132 = /dev/hwtrap Hardware fault trap
352 133 = /dev/exttrp External device trap
353 134 = /dev/apm_bios Advanced Power Management BIOS
354 135 = /dev/rtc Real Time Clock
355 139 = /dev/openprom SPARC OpenBoot PROM
356 140 = /dev/relay8 Berkshire Products Octal relay card
357 141 = /dev/relay16 Berkshire Products ISO-16 relay card
358 142 =
359 143 = /dev/pciconf PCI configuration space
360 144 = /dev/nvram Non-volatile configuration RAM
361 145 = /dev/hfmodem Soundcard shortwave modem control
362 146 = /dev/graphics Linux/SGI graphics device
363 147 = /dev/opengl Linux/SGI OpenGL pipe
364 148 = /dev/gfx Linux/SGI graphics effects device
365 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
366 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
367 151 = /dev/led Front panel LEDs
368 152 = /dev/kpoll Kernel Poll Driver
369 153 = /dev/mergemem Memory merge device
370 154 = /dev/pmu Macintosh PowerBook power manager
371 155 = /dev/isictl MultiTech ISICom serial control
372 156 = /dev/lcd Front panel LCD display
373 157 = /dev/ac Applicom Intl Profibus card
374 158 = /dev/nwbutton Netwinder external button
375 159 = /dev/nwdebug Netwinder debug interface
376 160 = /dev/nwflash Netwinder flash memory
377 161 = /dev/userdma User-space DMA access
378 162 = /dev/smbus System Management Bus
379 163 = /dev/lik Logitech Internet Keyboard
380 164 = /dev/ipmo Intel Intelligent Platform Management
381 165 = /dev/vmmon VMWare virtual machine monitor
382 166 = /dev/i2o/ctl I2O configuration manager
383 167 = /dev/specialix_sxctl Specialix serial control
384 168 = /dev/tcldrv Technology Concepts serial control
385 169 = /dev/specialix_rioctl Specialix RIO serial control
386 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
387 171 = /dev/srripc QNX4 API IPC manager
388 172 = /dev/usemaclone Semaphore clone device
389 173 = /dev/ipmikcs Intelligent Platform Management
390 174 = /dev/uctrl SPARCbook 3 microcontroller
391 175 = /dev/agpgart AGP Graphics Address Remapping Table
392 176 = /dev/gtrsc Gorgy Timing radio clock
393 177 = /dev/cbm Serial CBM bus
394 178 = /dev/jsflash JavaStation OS flash SIMM
395 179 = /dev/xsvc High-speed shared-mem/semaphore service
396 180 = /dev/vrbuttons Vr41xx button input device
397 181 = /dev/toshiba Toshiba laptop SMM support
398 182 = /dev/perfctr Performance-monitoring counters
399 183 = /dev/hwrng Generic random number generator
400 184 = /dev/cpu/microcode CPU microcode update interface
401 186 = /dev/atomicps Atomic shapshot of process state data
402 187 = /dev/irnet IrNET device
403 188 = /dev/smbusbios SMBus BIOS
404 189 = /dev/ussp_ctl User space serial port control
405 190 = /dev/crash Mission Critical Linux crash dump facility
406 191 = /dev/pcl181 <information missing>
407 192 = /dev/nas_xbus NAS xbus LCD/buttons access
408 193 = /dev/d7s SPARC 7-segment display
409 194 = /dev/zkshim Zero-Knowledge network shim control
410 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
411 198 = /dev/sexec Signed executable interface
412 199 = /dev/scanners/cuecat :CueCat barcode scanner
413 200 = /dev/net/tun TAP/TUN network device
414 201 = /dev/button/gulpb Transmeta GULP-B buttons
415 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
416 204 = /dev/video/em8300 EM8300 DVD decoder control
417 205 = /dev/video/em8300_mv EM8300 DVD decoder video
418 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
419 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
420 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
421 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
422 210 = /dev/impi/bt IMPI coprocessor block transfer
423 211 = /dev/impi/smic IMPI coprocessor stream interface
424 212 = /dev/watchdogs/0 First watchdog device
425 213 = /dev/watchdogs/1 Second watchdog device
426 214 = /dev/watchdogs/2 Third watchdog device
427 215 = /dev/watchdogs/3 Fourth watchdog device
428 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
429 217 = /dev/ni/natmotn National Instruments Motion
430 218 = /dev/kchuid Inter-process chuid control
431 219 = /dev/modems/mwave MWave modem firmware upload
432 220 = /dev/mptctl Message passing technology (MPT) control
433 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
434 222 = /dev/mvista/hasi Montavista PICMG high availability
435 223 = /dev/input/uinput User level driver support for input
436 224 = /dev/tpm TCPA TPM driver
437 225 = /dev/pps Pulse Per Second driver
438 226 = /dev/systrace Systrace device
439 227 = /dev/mcelog X86_64 Machine Check Exception driver
440 228 = /dev/hpet HPET driver
441 229 = /dev/fuse Fuse (virtual filesystem in user-space)
442 230 = /dev/midishare MidiShare driver
443 231 = /dev/snapshot System memory snapshot device
444 232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
445 233 = /dev/kmview View-OS A process with a view
446 234 = /dev/btrfs-control Btrfs control device
447 235 = /dev/autofs Autofs control device
448 236 = /dev/mapper/control Device-Mapper control device
449 240-254 Reserved for local use
450 255 Reserved for MISC_DYNAMIC_MINOR
452 11 char Raw keyboard device (Linux/SPARC only)
453 0 = /dev/kbd Raw keyboard device
455 11 char Serial Mux device (Linux/PA-RISC only)
456 0 = /dev/ttyB0 First mux port
457 1 = /dev/ttyB1 Second mux port
458 ...
460 11 block SCSI CD-ROM devices
461 0 = /dev/scd0 First SCSI CD-ROM
462 1 = /dev/scd1 Second SCSI CD-ROM
463 ...
465 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
467 12 char QIC-02 tape
468 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
469 3 = /dev/tpqic11 QIC-11, rewind-on-close
470 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
471 5 = /dev/tpqic24 QIC-24, rewind-on-close
472 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
473 7 = /dev/tpqic120 QIC-120, rewind-on-close
474 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
475 9 = /dev/tpqic150 QIC-150, rewind-on-close
477 The device names specified are proposed -- if there
478 are "standard" names for these devices, please let me know.
480 12 block
482 13 char Input core
483 0 = /dev/input/js0 First joystick
484 1 = /dev/input/js1 Second joystick
485 ...
486 32 = /dev/input/mouse0 First mouse
487 33 = /dev/input/mouse1 Second mouse
488 ...
489 63 = /dev/input/mice Unified mouse
490 64 = /dev/input/event0 First event queue
491 65 = /dev/input/event1 Second event queue
492 ...
494 Each device type has 5 bits (32 minors).
496 13 block 8-bit MFM/RLL/IDE controller
497 0 = /dev/xda First XT disk whole disk
498 64 = /dev/xdb Second XT disk whole disk
500 Partitions are handled in the same way as IDE disks
501 (see major number 3).
503 14 char Open Sound System (OSS)
504 0 = /dev/mixer Mixer control
505 1 = /dev/sequencer Audio sequencer
506 2 = /dev/midi00 First MIDI port
507 3 = /dev/dsp Digital audio
508 4 = /dev/audio Sun-compatible digital audio
509 6 =
510 7 = /dev/audioctl SPARC audio control device
511 8 = /dev/sequencer2 Sequencer -- alternate device
512 16 = /dev/mixer1 Second soundcard mixer control
513 17 = /dev/patmgr0 Sequencer patch manager
514 18 = /dev/midi01 Second MIDI port
515 19 = /dev/dsp1 Second soundcard digital audio
516 20 = /dev/audio1 Second soundcard Sun digital audio
517 33 = /dev/patmgr1 Sequencer patch manager
518 34 = /dev/midi02 Third MIDI port
519 50 = /dev/midi03 Fourth MIDI port
521 14 block
523 15 char Joystick
524 0 = /dev/js0 First analog joystick
525 1 = /dev/js1 Second analog joystick
526 ...
527 128 = /dev/djs0 First digital joystick
528 129 = /dev/djs1 Second digital joystick
529 ...
530 15 block Sony CDU-31A/CDU-33A CD-ROM
531 0 = /dev/sonycd Sony CDU-31a CD-ROM
533 16 char Non-SCSI scanners
534 0 = /dev/gs4500 Genius 4500 handheld scanner
536 16 block GoldStar CD-ROM
537 0 = /dev/gscd GoldStar CD-ROM
539 17 char OBSOLETE (was Chase serial card)
540 0 = /dev/ttyH0 First Chase port
541 1 = /dev/ttyH1 Second Chase port
542 ...
543 17 block Optics Storage CD-ROM
544 0 = /dev/optcd Optics Storage CD-ROM
546 18 char OBSOLETE (was Chase serial card - alternate devices)
547 0 = /dev/cuh0 Callout device for ttyH0
548 1 = /dev/cuh1 Callout device for ttyH1
549 ...
550 18 block Sanyo CD-ROM
551 0 = /dev/sjcd Sanyo CD-ROM
553 19 char Cyclades serial card
554 0 = /dev/ttyC0 First Cyclades port
555 ...
556 31 = /dev/ttyC31 32nd Cyclades port
558 19 block "Double" compressed disk
559 0 = /dev/double0 First compressed disk
560 ...
561 7 = /dev/double7 Eighth compressed disk
562 128 = /dev/cdouble0 Mirror of first compressed disk
563 ...
564 135 = /dev/cdouble7 Mirror of eighth compressed disk
566 See the Double documentation for the meaning of the
567 mirror devices.
569 20 char Cyclades serial card - alternate devices
570 0 = /dev/cub0 Callout device for ttyC0
571 ...
572 31 = /dev/cub31 Callout device for ttyC31
574 20 block Hitachi CD-ROM (under development)
575 0 = /dev/hitcd Hitachi CD-ROM
577 21 char Generic SCSI access
578 0 = /dev/sg0 First generic SCSI device
579 1 = /dev/sg1 Second generic SCSI device
580 ...
582 Most distributions name these /dev/sga, /dev/sgb...;
583 this sets an unnecessary limit of 26 SCSI devices in
584 the system and is counter to standard Linux
585 device-naming practice.
587 21 block Acorn MFM hard drive interface
588 0 = /dev/mfma First MFM drive whole disk
589 64 = /dev/mfmb Second MFM drive whole disk
591 This device is used on the ARM-based Acorn RiscPC.
592 Partitions are handled the same way as for IDE disks
593 (see major number 3).
595 22 char Digiboard serial card
596 0 = /dev/ttyD0 First Digiboard port
597 1 = /dev/ttyD1 Second Digiboard port
598 ...
599 22 block Second IDE hard disk/CD-ROM interface
600 0 = /dev/hdc Master: whole disk (or CD-ROM)
601 64 = /dev/hdd Slave: whole disk (or CD-ROM)
603 Partitions are handled the same way as for the first
604 interface (see major number 3).
606 23 char Digiboard serial card - alternate devices
607 0 = /dev/cud0 Callout device for ttyD0
608 1 = /dev/cud1 Callout device for ttyD1
609 ...
610 23 block Mitsumi proprietary CD-ROM
611 0 = /dev/mcd Mitsumi CD-ROM
613 24 char Stallion serial card
614 0 = /dev/ttyE0 Stallion port 0 card 0
615 1 = /dev/ttyE1 Stallion port 1 card 0
616 ...
617 64 = /dev/ttyE64 Stallion port 0 card 1
618 65 = /dev/ttyE65 Stallion port 1 card 1
619 ...
620 128 = /dev/ttyE128 Stallion port 0 card 2
621 129 = /dev/ttyE129 Stallion port 1 card 2
622 ...
623 192 = /dev/ttyE192 Stallion port 0 card 3
624 193 = /dev/ttyE193 Stallion port 1 card 3
625 ...
626 24 block Sony CDU-535 CD-ROM
627 0 = /dev/cdu535 Sony CDU-535 CD-ROM
629 25 char Stallion serial card - alternate devices
630 0 = /dev/cue0 Callout device for ttyE0
631 1 = /dev/cue1 Callout device for ttyE1
632 ...
633 64 = /dev/cue64 Callout device for ttyE64
634 65 = /dev/cue65 Callout device for ttyE65
635 ...
636 128 = /dev/cue128 Callout device for ttyE128
637 129 = /dev/cue129 Callout device for ttyE129
638 ...
639 192 = /dev/cue192 Callout device for ttyE192
640 193 = /dev/cue193 Callout device for ttyE193
641 ...
642 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
643 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
644 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
645 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
646 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
648 26 char
650 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
651 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
652 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
653 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
654 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
656 27 char QIC-117 tape
657 0 = /dev/qft0 Unit 0, rewind-on-close
658 1 = /dev/qft1 Unit 1, rewind-on-close
659 2 = /dev/qft2 Unit 2, rewind-on-close
660 3 = /dev/qft3 Unit 3, rewind-on-close
661 4 = /dev/nqft0 Unit 0, no rewind-on-close
662 5 = /dev/nqft1 Unit 1, no rewind-on-close
663 6 = /dev/nqft2 Unit 2, no rewind-on-close
664 7 = /dev/nqft3 Unit 3, no rewind-on-close
665 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
666 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
667 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
668 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
669 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
670 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
671 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
672 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
673 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
674 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
675 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
676 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
677 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
678 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
679 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
680 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
682 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
683 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
684 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
685 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
686 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
688 28 char Stallion serial card - card programming
689 0 = /dev/staliomem0 First Stallion card I/O memory
690 1 = /dev/staliomem1 Second Stallion card I/O memory
691 2 = /dev/staliomem2 Third Stallion card I/O memory
692 3 = /dev/staliomem3 Fourth Stallion card I/O memory
694 28 char Atari SLM ACSI laser printer (68k/Atari)
695 0 = /dev/slm0 First SLM laser printer
696 1 = /dev/slm1 Second SLM laser printer
697 ...
698 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
699 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
700 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
701 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
702 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
704 28 block ACSI disk (68k/Atari)
705 0 = /dev/ada First ACSI disk whole disk
706 16 = /dev/adb Second ACSI disk whole disk
707 32 = /dev/adc Third ACSI disk whole disk
708 ...
709 240 = /dev/adp 16th ACSI disk whole disk
711 Partitions are handled in the same way as for IDE
712 disks (see major number 3) except that the limit on
713 partitions is 15, like SCSI.
715 29 char Universal frame buffer
716 0 = /dev/fb0 First frame buffer
717 1 = /dev/fb1 Second frame buffer
718 ...
719 31 = /dev/fb31 32nd frame buffer
721 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
722 0 = /dev/aztcd Aztech CD-ROM
724 30 char iBCS-2 compatibility devices
725 0 = /dev/socksys Socket access
726 1 = /dev/spx SVR3 local X interface
727 32 = /dev/inet/ip Network access
728 33 = /dev/inet/icmp
729 34 = /dev/inet/ggp
730 35 = /dev/inet/ipip
731 36 = /dev/inet/tcp
732 37 = /dev/inet/egp
733 38 = /dev/inet/pup
734 39 = /dev/inet/udp
735 40 = /dev/inet/idp
736 41 = /dev/inet/rawip
738 Additionally, iBCS-2 requires the following links:
740 /dev/ip -> /dev/inet/ip
741 /dev/icmp -> /dev/inet/icmp
742 /dev/ggp -> /dev/inet/ggp
743 /dev/ipip -> /dev/inet/ipip
744 /dev/tcp -> /dev/inet/tcp
745 /dev/egp -> /dev/inet/egp
746 /dev/pup -> /dev/inet/pup
747 /dev/udp -> /dev/inet/udp
748 /dev/idp -> /dev/inet/idp
749 /dev/rawip -> /dev/inet/rawip
750 /dev/inet/arp -> /dev/inet/udp
751 /dev/inet/rip -> /dev/inet/udp
752 /dev/nfsd -> /dev/socksys
753 /dev/X0R -> /dev/null (? apparently not required ?)
755 30 block Philips LMS CM-205 CD-ROM
756 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
758 /dev/lmscd is an older name for this device. This
759 driver does not work with the CM-205MS CD-ROM.
761 31 char MPU-401 MIDI
762 0 = /dev/mpu401data MPU-401 data port
763 1 = /dev/mpu401stat MPU-401 status port
765 31 block ROM/flash memory card
766 0 = /dev/rom0 First ROM card (rw)
767 ...
768 7 = /dev/rom7 Eighth ROM card (rw)
769 8 = /dev/rrom0 First ROM card (ro)
770 ...
771 15 = /dev/rrom7 Eighth ROM card (ro)
772 16 = /dev/flash0 First flash memory card (rw)
773 ...
774 23 = /dev/flash7 Eighth flash memory card (rw)
775 24 = /dev/rflash0 First flash memory card (ro)
776 ...
777 31 = /dev/rflash7 Eighth flash memory card (ro)
779 The read-write (rw) devices support back-caching
780 written data in RAM, as well as writing to flash RAM
781 devices. The read-only devices (ro) support reading
782 only.
784 32 char Specialix serial card
785 0 = /dev/ttyX0 First Specialix port
786 1 = /dev/ttyX1 Second Specialix port
787 ...
788 32 block Philips LMS CM-206 CD-ROM
789 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
791 33 char Specialix serial card - alternate devices
792 0 = /dev/cux0 Callout device for ttyX0
793 1 = /dev/cux1 Callout device for ttyX1
794 ...
795 33 block Third IDE hard disk/CD-ROM interface
796 0 = /dev/hde Master: whole disk (or CD-ROM)
797 64 = /dev/hdf Slave: whole disk (or CD-ROM)
799 Partitions are handled the same way as for the first
800 interface (see major number 3).
802 34 char Z8530 HDLC driver
803 0 = /dev/scc0 First Z8530, first port
804 1 = /dev/scc1 First Z8530, second port
805 2 = /dev/scc2 Second Z8530, first port
806 3 = /dev/scc3 Second Z8530, second port
807 ...
809 In a previous version these devices were named
810 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
811 on.
813 34 block Fourth IDE hard disk/CD-ROM interface
814 0 = /dev/hdg Master: whole disk (or CD-ROM)
815 64 = /dev/hdh Slave: whole disk (or CD-ROM)
817 Partitions are handled the same way as for the first
818 interface (see major number 3).
820 35 char tclmidi MIDI driver
821 0 = /dev/midi0 First MIDI port, kernel timed
822 1 = /dev/midi1 Second MIDI port, kernel timed
823 2 = /dev/midi2 Third MIDI port, kernel timed
824 3 = /dev/midi3 Fourth MIDI port, kernel timed
825 64 = /dev/rmidi0 First MIDI port, untimed
826 65 = /dev/rmidi1 Second MIDI port, untimed
827 66 = /dev/rmidi2 Third MIDI port, untimed
828 67 = /dev/rmidi3 Fourth MIDI port, untimed
829 128 = /dev/smpte0 First MIDI port, SMPTE timed
830 129 = /dev/smpte1 Second MIDI port, SMPTE timed
831 130 = /dev/smpte2 Third MIDI port, SMPTE timed
832 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
834 35 block Slow memory ramdisk
835 0 = /dev/slram Slow memory ramdisk
837 36 char Netlink support
838 0 = /dev/route Routing, device updates, kernel to user
839 1 = /dev/skip enSKIP security cache control
840 3 = /dev/fwmonitor Firewall packet copies
841 16 = /dev/tap0 First Ethertap device
842 ...
843 31 = /dev/tap15 16th Ethertap device
845 36 block MCA ESDI hard disk
846 0 = /dev/eda First ESDI disk whole disk
847 64 = /dev/edb Second ESDI disk whole disk
848 ...
850 Partitions are handled in the same way as IDE disks
851 (see major number 3).
853 37 char IDE tape
854 0 = /dev/ht0 First IDE tape
855 1 = /dev/ht1 Second IDE tape
856 ...
857 128 = /dev/nht0 First IDE tape, no rewind-on-close
858 129 = /dev/nht1 Second IDE tape, no rewind-on-close
859 ...
861 Currently, only one IDE tape drive is supported.
863 37 block Zorro II ramdisk
864 0 = /dev/z2ram Zorro II ramdisk
866 38 char Myricom PCI Myrinet board
867 0 = /dev/mlanai0 First Myrinet board
868 1 = /dev/mlanai1 Second Myrinet board
869 ...
871 This device is used for status query, board control
872 and "user level packet I/O." This board is also
873 accessible as a standard networking "eth" device.
875 38 block OBSOLETE (was Linux/AP+)
877 39 char ML-16P experimental I/O board
878 0 = /dev/ml16pa-a0 First card, first analog channel
879 1 = /dev/ml16pa-a1 First card, second analog channel
880 ...
881 15 = /dev/ml16pa-a15 First card, 16th analog channel
882 16 = /dev/ml16pa-d First card, digital lines
883 17 = /dev/ml16pa-c0 First card, first counter/timer
884 18 = /dev/ml16pa-c1 First card, second counter/timer
885 19 = /dev/ml16pa-c2 First card, third counter/timer
886 32 = /dev/ml16pb-a0 Second card, first analog channel
887 33 = /dev/ml16pb-a1 Second card, second analog channel
888 ...
889 47 = /dev/ml16pb-a15 Second card, 16th analog channel
890 48 = /dev/ml16pb-d Second card, digital lines
891 49 = /dev/ml16pb-c0 Second card, first counter/timer
892 50 = /dev/ml16pb-c1 Second card, second counter/timer
893 51 = /dev/ml16pb-c2 Second card, third counter/timer
894 ...
895 39 block
897 40 char
899 40 block
901 41 char Yet Another Micro Monitor
902 0 = /dev/yamm Yet Another Micro Monitor
904 41 block
906 42 char Demo/sample use
908 42 block Demo/sample use
910 This number is intended for use in sample code, as
911 well as a general "example" device number. It
912 should never be used for a device driver that is being
913 distributed; either obtain an official number or use
914 the local/experimental range. The sudden addition or
915 removal of a driver with this number should not cause
916 ill effects to the system (bugs excepted.)
918 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
919 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
921 43 char isdn4linux virtual modem
922 0 = /dev/ttyI0 First virtual modem
923 ...
924 63 = /dev/ttyI63 64th virtual modem
926 43 block Network block devices
927 0 = /dev/nb0 First network block device
928 1 = /dev/nb1 Second network block device
929 ...
931 Network Block Device is somehow similar to loopback
932 devices: If you read from it, it sends packet across
933 network asking server for data. If you write to it, it
934 sends packet telling server to write. It could be used
935 to mounting filesystems over the net, swapping over
936 the net, implementing block device in userland etc.
938 44 char isdn4linux virtual modem - alternate devices
939 0 = /dev/cui0 Callout device for ttyI0
940 ...
941 63 = /dev/cui63 Callout device for ttyI63
943 44 block Flash Translation Layer (FTL) filesystems
944 0 = /dev/ftla FTL on first Memory Technology Device
945 16 = /dev/ftlb FTL on second Memory Technology Device
946 32 = /dev/ftlc FTL on third Memory Technology Device
947 ...
948 240 = /dev/ftlp FTL on 16th Memory Technology Device
950 Partitions are handled in the same way as for IDE
951 disks (see major number 3) except that the partition
952 limit is 15 rather than 63 per disk (same as SCSI.)
954 45 char isdn4linux ISDN BRI driver
955 0 = /dev/isdn0 First virtual B channel raw data
956 ...
957 63 = /dev/isdn63 64th virtual B channel raw data
958 64 = /dev/isdnctrl0 First channel control/debug
959 ...
960 127 = /dev/isdnctrl63 64th channel control/debug
962 128 = /dev/ippp0 First SyncPPP device
963 ...
964 191 = /dev/ippp63 64th SyncPPP device
966 255 = /dev/isdninfo ISDN monitor interface
968 45 block Parallel port IDE disk devices
969 0 = /dev/pda First parallel port IDE disk
970 16 = /dev/pdb Second parallel port IDE disk
971 32 = /dev/pdc Third parallel port IDE disk
972 48 = /dev/pdd Fourth parallel port IDE disk
974 Partitions are handled in the same way as for IDE
975 disks (see major number 3) except that the partition
976 limit is 15 rather than 63 per disk.
978 46 char Comtrol Rocketport serial card
979 0 = /dev/ttyR0 First Rocketport port
980 1 = /dev/ttyR1 Second Rocketport port
981 ...
982 46 block Parallel port ATAPI CD-ROM devices
983 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
984 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
985 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
986 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
988 47 char Comtrol Rocketport serial card - alternate devices
989 0 = /dev/cur0 Callout device for ttyR0
990 1 = /dev/cur1 Callout device for ttyR1
991 ...
992 47 block Parallel port ATAPI disk devices
993 0 = /dev/pf0 First parallel port ATAPI disk
994 1 = /dev/pf1 Second parallel port ATAPI disk
995 2 = /dev/pf2 Third parallel port ATAPI disk
996 3 = /dev/pf3 Fourth parallel port ATAPI disk
998 This driver is intended for floppy disks and similar
999 devices and hence does not support partitioning.
1001 48 char SDL RISCom serial card
1002 0 = /dev/ttyL0 First RISCom port
1003 1 = /dev/ttyL1 Second RISCom port
1004 ...
1005 48 block Mylex DAC960 PCI RAID controller; first controller
1006 0 = /dev/rd/c0d0 First disk, whole disk
1007 8 = /dev/rd/c0d1 Second disk, whole disk
1008 ...
1009 248 = /dev/rd/c0d31 32nd disk, whole disk
1011 For partitions add:
1012 0 = /dev/rd/c?d? Whole disk
1013 1 = /dev/rd/c?d?p1 First partition
1014 ...
1015 7 = /dev/rd/c?d?p7 Seventh partition
1017 49 char SDL RISCom serial card - alternate devices
1018 0 = /dev/cul0 Callout device for ttyL0
1019 1 = /dev/cul1 Callout device for ttyL1
1020 ...
1021 49 block Mylex DAC960 PCI RAID controller; second controller
1022 0 = /dev/rd/c1d0 First disk, whole disk
1023 8 = /dev/rd/c1d1 Second disk, whole disk
1024 ...
1025 248 = /dev/rd/c1d31 32nd disk, whole disk
1027 Partitions are handled as for major 48.
1029 50 char Reserved for GLINT
1031 50 block Mylex DAC960 PCI RAID controller; third controller
1032 0 = /dev/rd/c2d0 First disk, whole disk
1033 8 = /dev/rd/c2d1 Second disk, whole disk
1034 ...
1035 248 = /dev/rd/c2d31 32nd disk, whole disk
1037 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1038 0 = /dev/bc0 First Baycom radio modem
1039 1 = /dev/bc1 Second Baycom radio modem
1040 ...
1041 51 block Mylex DAC960 PCI RAID controller; fourth controller
1042 0 = /dev/rd/c3d0 First disk, whole disk
1043 8 = /dev/rd/c3d1 Second disk, whole disk
1044 ...
1045 248 = /dev/rd/c3d31 32nd disk, whole disk
1047 Partitions are handled as for major 48.
1049 52 char Spellcaster DataComm/BRI ISDN card
1050 0 = /dev/dcbri0 First DataComm card
1051 1 = /dev/dcbri1 Second DataComm card
1052 2 = /dev/dcbri2 Third DataComm card
1053 3 = /dev/dcbri3 Fourth DataComm card
1055 52 block Mylex DAC960 PCI RAID controller; fifth controller
1056 0 = /dev/rd/c4d0 First disk, whole disk
1057 8 = /dev/rd/c4d1 Second disk, whole disk
1058 ...
1059 248 = /dev/rd/c4d31 32nd disk, whole disk
1061 Partitions are handled as for major 48.
1063 53 char BDM interface for remote debugging MC683xx microcontrollers
1064 0 = /dev/pd_bdm0 PD BDM interface on lp0
1065 1 = /dev/pd_bdm1 PD BDM interface on lp1
1066 2 = /dev/pd_bdm2 PD BDM interface on lp2
1067 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1068 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1069 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1071 This device is used for the interfacing to the MC683xx
1072 microcontrollers via Background Debug Mode by use of a
1073 Parallel Port interface. PD is the Motorola Public
1074 Domain Interface and ICD is the commercial interface
1075 by P&E.
1077 53 block Mylex DAC960 PCI RAID controller; sixth controller
1078 0 = /dev/rd/c5d0 First disk, whole disk
1079 8 = /dev/rd/c5d1 Second disk, whole disk
1080 ...
1081 248 = /dev/rd/c5d31 32nd disk, whole disk
1083 Partitions are handled as for major 48.
1085 54 char Electrocardiognosis Holter serial card
1086 0 = /dev/holter0 First Holter port
1087 1 = /dev/holter1 Second Holter port
1088 2 = /dev/holter2 Third Holter port
1090 A custom serial card used by Electrocardiognosis SRL
1091 <mseritan@ottonel.pub.ro> to transfer data from Holter
1092 24-hour heart monitoring equipment.
1094 54 block Mylex DAC960 PCI RAID controller; seventh controller
1095 0 = /dev/rd/c6d0 First disk, whole disk
1096 8 = /dev/rd/c6d1 Second disk, whole disk
1097 ...
1098 248 = /dev/rd/c6d31 32nd disk, whole disk
1100 Partitions are handled as for major 48.
1102 55 char DSP56001 digital signal processor
1103 0 = /dev/dsp56k First DSP56001
1105 55 block Mylex DAC960 PCI RAID controller; eighth controller
1106 0 = /dev/rd/c7d0 First disk, whole disk
1107 8 = /dev/rd/c7d1 Second disk, whole disk
1108 ...
1109 248 = /dev/rd/c7d31 32nd disk, whole disk
1111 Partitions are handled as for major 48.
1113 56 char Apple Desktop Bus
1114 0 = /dev/adb ADB bus control
1116 Additional devices will be added to this number, all
1117 starting with /dev/adb.
1119 56 block Fifth IDE hard disk/CD-ROM interface
1120 0 = /dev/hdi Master: whole disk (or CD-ROM)
1121 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1123 Partitions are handled the same way as for the first
1124 interface (see major number 3).
1126 57 char Hayes ESP serial card
1127 0 = /dev/ttyP0 First ESP port
1128 1 = /dev/ttyP1 Second ESP port
1129 ...
1131 57 block Sixth IDE hard disk/CD-ROM interface
1132 0 = /dev/hdk Master: whole disk (or CD-ROM)
1133 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1135 Partitions are handled the same way as for the first
1136 interface (see major number 3).
1138 58 char Hayes ESP serial card - alternate devices
1139 0 = /dev/cup0 Callout device for ttyP0
1140 1 = /dev/cup1 Callout device for ttyP1
1141 ...
1143 58 block Reserved for logical volume manager
1145 59 char sf firewall package
1146 0 = /dev/firewall Communication with sf kernel module
1148 59 block Generic PDA filesystem device
1149 0 = /dev/pda0 First PDA device
1150 1 = /dev/pda1 Second PDA device
1151 ...
1153 The pda devices are used to mount filesystems on
1154 remote pda's (basically slow handheld machines with
1155 proprietary OS's and limited memory and storage
1156 running small fs translation drivers) through serial /
1157 IRDA / parallel links.
1159 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1161 60-63 char LOCAL/EXPERIMENTAL USE
1163 60-63 block LOCAL/EXPERIMENTAL USE
1164 Allocated for local/experimental use. For devices not
1165 assigned official numbers, these ranges should be
1166 used in order to avoid conflicting with future assignments.
1168 64 char ENskip kernel encryption package
1169 0 = /dev/enskip Communication with ENskip kernel module
1171 64 block Scramdisk/DriveCrypt encrypted devices
1172 0 = /dev/scramdisk/master Master node for ioctls
1173 1 = /dev/scramdisk/1 First encrypted device
1174 2 = /dev/scramdisk/2 Second encrypted device
1175 ...
1176 255 = /dev/scramdisk/255 255th encrypted device
1178 The filename of the encrypted container and the passwords
1179 are sent via ioctls (using the sdmount tool) to the master
1180 node which then activates them via one of the
1181 /dev/scramdisk/x nodes for loop mounting (all handled
1182 through the sdmount tool).
1184 Requested by: andy@scramdisklinux.org
1186 65 char Sundance "plink" Transputer boards (obsolete, unused)
1187 0 = /dev/plink0 First plink device
1188 1 = /dev/plink1 Second plink device
1189 2 = /dev/plink2 Third plink device
1190 3 = /dev/plink3 Fourth plink device
1191 64 = /dev/rplink0 First plink device, raw
1192 65 = /dev/rplink1 Second plink device, raw
1193 66 = /dev/rplink2 Third plink device, raw
1194 67 = /dev/rplink3 Fourth plink device, raw
1195 128 = /dev/plink0d First plink device, debug
1196 129 = /dev/plink1d Second plink device, debug
1197 130 = /dev/plink2d Third plink device, debug
1198 131 = /dev/plink3d Fourth plink device, debug
1199 192 = /dev/rplink0d First plink device, raw, debug
1200 193 = /dev/rplink1d Second plink device, raw, debug
1201 194 = /dev/rplink2d Third plink device, raw, debug
1202 195 = /dev/rplink3d Fourth plink device, raw, debug
1204 This is a commercial driver; contact James Howes
1205 <jth@prosig.demon.co.uk> for information.
1207 65 block SCSI disk devices (16-31)
1208 0 = /dev/sdq 17th SCSI disk whole disk
1209 16 = /dev/sdr 18th SCSI disk whole disk
1210 32 = /dev/sds 19th SCSI disk whole disk
1211 ...
1212 240 = /dev/sdaf 32nd SCSI disk whole disk
1214 Partitions are handled in the same way as for IDE
1215 disks (see major number 3) except that the limit on
1216 partitions is 15.
1218 66 char YARC PowerPC PCI coprocessor card
1219 0 = /dev/yppcpci0 First YARC card
1220 1 = /dev/yppcpci1 Second YARC card
1221 ...
1223 66 block SCSI disk devices (32-47)
1224 0 = /dev/sdag 33th SCSI disk whole disk
1225 16 = /dev/sdah 34th SCSI disk whole disk
1226 32 = /dev/sdai 35th SCSI disk whole disk
1227 ...
1228 240 = /dev/sdav 48nd SCSI disk whole disk
1230 Partitions are handled in the same way as for IDE
1231 disks (see major number 3) except that the limit on
1232 partitions is 15.
1234 67 char Coda network file system
1235 0 = /dev/cfs0 Coda cache manager
1237 See http://www.coda.cs.cmu.edu for information about Coda.
1239 67 block SCSI disk devices (48-63)
1240 0 = /dev/sdaw 49th SCSI disk whole disk
1241 16 = /dev/sdax 50th SCSI disk whole disk
1242 32 = /dev/sday 51st SCSI disk whole disk
1243 ...
1244 240 = /dev/sdbl 64th SCSI disk whole disk
1246 Partitions are handled in the same way as for IDE
1247 disks (see major number 3) except that the limit on
1248 partitions is 15.
1250 68 char CAPI 2.0 interface
1251 0 = /dev/capi20 Control device
1252 1 = /dev/capi20.00 First CAPI 2.0 application
1253 2 = /dev/capi20.01 Second CAPI 2.0 application
1254 ...
1255 20 = /dev/capi20.19 19th CAPI 2.0 application
1257 ISDN CAPI 2.0 driver for use with CAPI 2.0
1258 applications; currently supports the AVM B1 card.
1260 68 block SCSI disk devices (64-79)
1261 0 = /dev/sdbm 65th SCSI disk whole disk
1262 16 = /dev/sdbn 66th SCSI disk whole disk
1263 32 = /dev/sdbo 67th SCSI disk whole disk
1264 ...
1265 240 = /dev/sdcb 80th SCSI disk whole disk
1267 Partitions are handled in the same way as for IDE
1268 disks (see major number 3) except that the limit on
1269 partitions is 15.
1271 69 char MA16 numeric accelerator card
1272 0 = /dev/ma16 Board memory access
1274 69 block SCSI disk devices (80-95)
1275 0 = /dev/sdcc 81st SCSI disk whole disk
1276 16 = /dev/sdcd 82nd SCSI disk whole disk
1277 32 = /dev/sdce 83th SCSI disk whole disk
1278 ...
1279 240 = /dev/sdcr 96th SCSI disk whole disk
1281 Partitions are handled in the same way as for IDE
1282 disks (see major number 3) except that the limit on
1283 partitions is 15.
1285 70 char SpellCaster Protocol Services Interface
1286 0 = /dev/apscfg Configuration interface
1287 1 = /dev/apsauth Authentication interface
1288 2 = /dev/apslog Logging interface
1289 3 = /dev/apsdbg Debugging interface
1290 64 = /dev/apsisdn ISDN command interface
1291 65 = /dev/apsasync Async command interface
1292 128 = /dev/apsmon Monitor interface
1294 70 block SCSI disk devices (96-111)
1295 0 = /dev/sdcs 97th SCSI disk whole disk
1296 16 = /dev/sdct 98th SCSI disk whole disk
1297 32 = /dev/sdcu 99th SCSI disk whole disk
1298 ...
1299 240 = /dev/sddh 112nd SCSI disk whole disk
1301 Partitions are handled in the same way as for IDE
1302 disks (see major number 3) except that the limit on
1303 partitions is 15.
1305 71 char Computone IntelliPort II serial card
1306 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1307 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1308 ...
1309 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1310 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1311 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1312 ...
1313 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1314 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1315 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1316 ...
1317 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1318 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1319 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1320 ...
1321 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1323 71 block SCSI disk devices (112-127)
1324 0 = /dev/sddi 113th SCSI disk whole disk
1325 16 = /dev/sddj 114th SCSI disk whole disk
1326 32 = /dev/sddk 115th SCSI disk whole disk
1327 ...
1328 240 = /dev/sddx 128th SCSI disk whole disk
1330 Partitions are handled in the same way as for IDE
1331 disks (see major number 3) except that the limit on
1332 partitions is 15.
1334 72 char Computone IntelliPort II serial card - alternate devices
1335 0 = /dev/cuf0 Callout device for ttyF0
1336 1 = /dev/cuf1 Callout device for ttyF1
1337 ...
1338 63 = /dev/cuf63 Callout device for ttyF63
1339 64 = /dev/cuf64 Callout device for ttyF64
1340 65 = /dev/cuf65 Callout device for ttyF65
1341 ...
1342 127 = /dev/cuf127 Callout device for ttyF127
1343 128 = /dev/cuf128 Callout device for ttyF128
1344 129 = /dev/cuf129 Callout device for ttyF129
1345 ...
1346 191 = /dev/cuf191 Callout device for ttyF191
1347 192 = /dev/cuf192 Callout device for ttyF192
1348 193 = /dev/cuf193 Callout device for ttyF193
1349 ...
1350 255 = /dev/cuf255 Callout device for ttyF255
1352 72 block Compaq Intelligent Drive Array, first controller
1353 0 = /dev/ida/c0d0 First logical drive whole disk
1354 16 = /dev/ida/c0d1 Second logical drive whole disk
1355 ...
1356 240 = /dev/ida/c0d15 16th logical drive whole disk
1358 Partitions are handled the same way as for Mylex
1359 DAC960 (see major number 48) except that the limit on
1360 partitions is 15.
1362 73 char Computone IntelliPort II serial card - control devices
1363 0 = /dev/ip2ipl0 Loadware device for board 0
1364 1 = /dev/ip2stat0 Status device for board 0
1365 4 = /dev/ip2ipl1 Loadware device for board 1
1366 5 = /dev/ip2stat1 Status device for board 1
1367 8 = /dev/ip2ipl2 Loadware device for board 2
1368 9 = /dev/ip2stat2 Status device for board 2
1369 12 = /dev/ip2ipl3 Loadware device for board 3
1370 13 = /dev/ip2stat3 Status device for board 3
1372 73 block Compaq Intelligent Drive Array, second controller
1373 0 = /dev/ida/c1d0 First logical drive whole disk
1374 16 = /dev/ida/c1d1 Second logical drive whole disk
1375 ...
1376 240 = /dev/ida/c1d15 16th logical drive whole disk
1378 Partitions are handled the same way as for Mylex
1379 DAC960 (see major number 48) except that the limit on
1380 partitions is 15.
1382 74 char SCI bridge
1383 0 = /dev/SCI/0 SCI device 0
1384 1 = /dev/SCI/1 SCI device 1
1385 ...
1387 Currently for Dolphin Interconnect Solutions' PCI-SCI
1388 bridge.
1390 74 block Compaq Intelligent Drive Array, third controller
1391 0 = /dev/ida/c2d0 First logical drive whole disk
1392 16 = /dev/ida/c2d1 Second logical drive whole disk
1393 ...
1394 240 = /dev/ida/c2d15 16th logical drive whole disk
1396 Partitions are handled the same way as for Mylex
1397 DAC960 (see major number 48) except that the limit on
1398 partitions is 15.
1400 75 char Specialix IO8+ serial card
1401 0 = /dev/ttyW0 First IO8+ port, first card
1402 1 = /dev/ttyW1 Second IO8+ port, first card
1403 ...
1404 8 = /dev/ttyW8 First IO8+ port, second card
1405 ...
1407 75 block Compaq Intelligent Drive Array, fourth controller
1408 0 = /dev/ida/c3d0 First logical drive whole disk
1409 16 = /dev/ida/c3d1 Second logical drive whole disk
1410 ...
1411 240 = /dev/ida/c3d15 16th logical drive whole disk
1413 Partitions are handled the same way as for Mylex
1414 DAC960 (see major number 48) except that the limit on
1415 partitions is 15.
1417 76 char Specialix IO8+ serial card - alternate devices
1418 0 = /dev/cuw0 Callout device for ttyW0
1419 1 = /dev/cuw1 Callout device for ttyW1
1420 ...
1421 8 = /dev/cuw8 Callout device for ttyW8
1422 ...
1424 76 block Compaq Intelligent Drive Array, fifth controller
1425 0 = /dev/ida/c4d0 First logical drive whole disk
1426 16 = /dev/ida/c4d1 Second logical drive whole disk
1427 ...
1428 240 = /dev/ida/c4d15 16th logical drive whole disk
1430 Partitions are handled the same way as for Mylex
1431 DAC960 (see major number 48) except that the limit on
1432 partitions is 15.
1435 77 char ComScire Quantum Noise Generator
1436 0 = /dev/qng ComScire Quantum Noise Generator
1438 77 block Compaq Intelligent Drive Array, sixth controller
1439 0 = /dev/ida/c5d0 First logical drive whole disk
1440 16 = /dev/ida/c5d1 Second logical drive whole disk
1441 ...
1442 240 = /dev/ida/c5d15 16th logical drive whole disk
1444 Partitions are handled the same way as for Mylex
1445 DAC960 (see major number 48) except that the limit on
1446 partitions is 15.
1448 78 char PAM Software's multimodem boards
1449 0 = /dev/ttyM0 First PAM modem
1450 1 = /dev/ttyM1 Second PAM modem
1451 ...
1453 78 block Compaq Intelligent Drive Array, seventh controller
1454 0 = /dev/ida/c6d0 First logical drive whole disk
1455 16 = /dev/ida/c6d1 Second logical drive whole disk
1456 ...
1457 240 = /dev/ida/c6d15 16th logical drive whole disk
1459 Partitions are handled the same way as for Mylex
1460 DAC960 (see major number 48) except that the limit on
1461 partitions is 15.
1463 79 char PAM Software's multimodem boards - alternate devices
1464 0 = /dev/cum0 Callout device for ttyM0
1465 1 = /dev/cum1 Callout device for ttyM1
1466 ...
1468 79 block Compaq Intelligent Drive Array, eighth controller
1469 0 = /dev/ida/c7d0 First logical drive whole disk
1470 16 = /dev/ida/c7d1 Second logical drive whole disk
1471 ...
1472 240 = /dev/ida/c715 16th logical drive whole disk
1474 Partitions are handled the same way as for Mylex
1475 DAC960 (see major number 48) except that the limit on
1476 partitions is 15.
1478 80 char Photometrics AT200 CCD camera
1479 0 = /dev/at200 Photometrics AT200 CCD camera
1481 80 block I2O hard disk
1482 0 = /dev/i2o/hda First I2O hard disk, whole disk
1483 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1484 ...
1485 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1487 Partitions are handled in the same way as for IDE
1488 disks (see major number 3) except that the limit on
1489 partitions is 15.
1491 81 char video4linux
1492 0 = /dev/video0 Video capture/overlay device
1493 ...
1494 63 = /dev/video63 Video capture/overlay device
1495 64 = /dev/radio0 Radio device
1496 ...
1497 127 = /dev/radio63 Radio device
1498 224 = /dev/vbi0 Vertical blank interrupt
1499 ...
1500 255 = /dev/vbi31 Vertical blank interrupt
1502 81 block I2O hard disk
1503 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1504 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1505 ...
1506 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1508 Partitions are handled in the same way as for IDE
1509 disks (see major number 3) except that the limit on
1510 partitions is 15.
1512 82 char WiNRADiO communications receiver card
1513 0 = /dev/winradio0 First WiNRADiO card
1514 1 = /dev/winradio1 Second WiNRADiO card
1515 ...
1517 The driver and documentation may be obtained from
1518 http://www.winradio.com/
1520 82 block I2O hard disk
1521 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1522 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1523 ...
1524 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1526 Partitions are handled in the same way as for IDE
1527 disks (see major number 3) except that the limit on
1528 partitions is 15.
1530 83 char Matrox mga_vid video driver
1531 0 = /dev/mga_vid0 1st video card
1532 1 = /dev/mga_vid1 2nd video card
1533 2 = /dev/mga_vid2 3rd video card
1534 ...
1535 15 = /dev/mga_vid15 16th video card
1537 83 block I2O hard disk
1538 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1539 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1540 ...
1541 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1543 Partitions are handled in the same way as for IDE
1544 disks (see major number 3) except that the limit on
1545 partitions is 15.
1547 84 char Ikon 1011[57] Versatec Greensheet Interface
1548 0 = /dev/ihcp0 First Greensheet port
1549 1 = /dev/ihcp1 Second Greensheet port
1551 84 block I2O hard disk
1552 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1553 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1554 ...
1555 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1557 Partitions are handled in the same way as for IDE
1558 disks (see major number 3) except that the limit on
1559 partitions is 15.
1561 85 char Linux/SGI shared memory input queue
1562 0 = /dev/shmiq Master shared input queue
1563 1 = /dev/qcntl0 First device pushed
1564 2 = /dev/qcntl1 Second device pushed
1565 ...
1567 85 block I2O hard disk
1568 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1569 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1570 ...
1571 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1573 Partitions are handled in the same way as for IDE
1574 disks (see major number 3) except that the limit on
1575 partitions is 15.
1577 86 char SCSI media changer
1578 0 = /dev/sch0 First SCSI media changer
1579 1 = /dev/sch1 Second SCSI media changer
1580 ...
1582 86 block I2O hard disk
1583 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1584 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1585 ...
1586 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1588 Partitions are handled in the same way as for IDE
1589 disks (see major number 3) except that the limit on
1590 partitions is 15.
1592 87 char Sony Control-A1 stereo control bus
1593 0 = /dev/controla0 First device on chain
1594 1 = /dev/controla1 Second device on chain
1595 ...
1597 87 block I2O hard disk
1598 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1599 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1600 ...
1601 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1603 Partitions are handled in the same way as for IDE
1604 disks (see major number 3) except that the limit on
1605 partitions is 15.
1607 88 char COMX synchronous serial card
1608 0 = /dev/comx0 COMX channel 0
1609 1 = /dev/comx1 COMX channel 1
1610 ...
1612 88 block Seventh IDE hard disk/CD-ROM interface
1613 0 = /dev/hdm Master: whole disk (or CD-ROM)
1614 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1616 Partitions are handled the same way as for the first
1617 interface (see major number 3).
1619 89 char I2C bus interface
1620 0 = /dev/i2c-0 First I2C adapter
1621 1 = /dev/i2c-1 Second I2C adapter
1622 ...
1624 89 block Eighth IDE hard disk/CD-ROM interface
1625 0 = /dev/hdo Master: whole disk (or CD-ROM)
1626 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1628 Partitions are handled the same way as for the first
1629 interface (see major number 3).
1631 90 char Memory Technology Device (RAM, ROM, Flash)
1632 0 = /dev/mtd0 First MTD (rw)
1633 1 = /dev/mtdr0 First MTD (ro)
1634 ...
1635 30 = /dev/mtd15 16th MTD (rw)
1636 31 = /dev/mtdr15 16th MTD (ro)
1638 90 block Ninth IDE hard disk/CD-ROM interface
1639 0 = /dev/hdq Master: whole disk (or CD-ROM)
1640 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1642 Partitions are handled the same way as for the first
1643 interface (see major number 3).
1645 91 char CAN-Bus devices
1646 0 = /dev/can0 First CAN-Bus controller
1647 1 = /dev/can1 Second CAN-Bus controller
1648 ...
1650 91 block Tenth IDE hard disk/CD-ROM interface
1651 0 = /dev/hds Master: whole disk (or CD-ROM)
1652 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1654 Partitions are handled the same way as for the first
1655 interface (see major number 3).
1657 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1659 92 block PPDD encrypted disk driver
1660 0 = /dev/ppdd0 First encrypted disk
1661 1 = /dev/ppdd1 Second encrypted disk
1662 ...
1664 Partitions are handled in the same way as for IDE
1665 disks (see major number 3) except that the limit on
1666 partitions is 15.
1668 93 char
1670 93 block NAND Flash Translation Layer filesystem
1671 0 = /dev/nftla First NFTL layer
1672 16 = /dev/nftlb Second NFTL layer
1673 ...
1674 240 = /dev/nftlp 16th NTFL layer
1676 94 char
1678 94 block IBM S/390 DASD block storage
1679 0 = /dev/dasda First DASD device, major
1680 1 = /dev/dasda1 First DASD device, block 1
1681 2 = /dev/dasda2 First DASD device, block 2
1682 3 = /dev/dasda3 First DASD device, block 3
1683 4 = /dev/dasdb Second DASD device, major
1684 5 = /dev/dasdb1 Second DASD device, block 1
1685 6 = /dev/dasdb2 Second DASD device, block 2
1686 7 = /dev/dasdb3 Second DASD device, block 3
1687 ...
1689 95 char IP filter
1690 0 = /dev/ipl Filter control device/log file
1691 1 = /dev/ipnat NAT control device/log file
1692 2 = /dev/ipstate State information log file
1693 3 = /dev/ipauth Authentication control device/log file
1694 ...
1696 96 char Parallel port ATAPI tape devices
1697 0 = /dev/pt0 First parallel port ATAPI tape
1698 1 = /dev/pt1 Second parallel port ATAPI tape
1699 ...
1700 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1701 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1702 ...
1704 96 block Inverse NAND Flash Translation Layer
1705 0 = /dev/inftla First INFTL layer
1706 16 = /dev/inftlb Second INFTL layer
1707 ...
1708 240 = /dev/inftlp 16th INTFL layer
1710 97 char Parallel port generic ATAPI interface
1711 0 = /dev/pg0 First parallel port ATAPI device
1712 1 = /dev/pg1 Second parallel port ATAPI device
1713 2 = /dev/pg2 Third parallel port ATAPI device
1714 3 = /dev/pg3 Fourth parallel port ATAPI device
1716 These devices support the same API as the generic SCSI
1717 devices.
1719 98 char Control and Measurement Device (comedi)
1720 0 = /dev/comedi0 First comedi device
1721 1 = /dev/comedi1 Second comedi device
1722 ...
1724 See http://stm.lbl.gov/comedi.
1726 98 block User-mode virtual block device
1727 0 = /dev/ubda First user-mode block device
1728 16 = /dev/udbb Second user-mode block device
1729 ...
1731 Partitions are handled in the same way as for IDE
1732 disks (see major number 3) except that the limit on
1733 partitions is 15.
1735 This device is used by the user-mode virtual kernel port.
1737 99 char Raw parallel ports
1738 0 = /dev/parport0 First parallel port
1739 1 = /dev/parport1 Second parallel port
1740 ...
1742 99 block JavaStation flash disk
1743 0 = /dev/jsfd JavaStation flash disk
1745 100 char Telephony for Linux
1746 0 = /dev/phone0 First telephony device
1747 1 = /dev/phone1 Second telephony device
1748 ...
1750 101 char Motorola DSP 56xxx board
1751 0 = /dev/mdspstat Status information
1752 1 = /dev/mdsp1 First DSP board I/O controls
1753 ...
1754 16 = /dev/mdsp16 16th DSP board I/O controls
1756 101 block AMI HyperDisk RAID controller
1757 0 = /dev/amiraid/ar0 First array whole disk
1758 16 = /dev/amiraid/ar1 Second array whole disk
1759 ...
1760 240 = /dev/amiraid/ar15 16th array whole disk
1762 For each device, partitions are added as:
1763 0 = /dev/amiraid/ar? Whole disk
1764 1 = /dev/amiraid/ar?p1 First partition
1765 2 = /dev/amiraid/ar?p2 Second partition
1766 ...
1767 15 = /dev/amiraid/ar?p15 15th partition
1769 102 char
1771 102 block Compressed block device
1772 0 = /dev/cbd/a First compressed block device, whole device
1773 16 = /dev/cbd/b Second compressed block device, whole device
1774 ...
1775 240 = /dev/cbd/p 16th compressed block device, whole device
1777 Partitions are handled in the same way as for IDE
1778 disks (see major number 3) except that the limit on
1779 partitions is 15.
1781 103 char Arla network file system
1782 0 = /dev/nnpfs0 First NNPFS device
1783 1 = /dev/nnpfs1 Second NNPFS device
1785 Arla is a free clone of the Andrew File System, AFS.
1786 The NNPFS device gives user mode filesystem
1787 implementations a kernel presence for caching and easy
1788 mounting. For more information about the project,
1789 write to <arla-drinkers@stacken.kth.se> or see
1790 http://www.stacken.kth.se/project/arla/
1792 103 block Audit device
1793 0 = /dev/audit Audit device
1795 104 char Flash BIOS support
1797 104 block Compaq Next Generation Drive Array, first controller
1798 0 = /dev/cciss/c0d0 First logical drive, whole disk
1799 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1800 ...
1801 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1803 Partitions are handled the same way as for Mylex
1804 DAC960 (see major number 48) except that the limit on
1805 partitions is 15.
1807 105 char Comtrol VS-1000 serial controller
1808 0 = /dev/ttyV0 First VS-1000 port
1809 1 = /dev/ttyV1 Second VS-1000 port
1810 ...
1812 105 block Compaq Next Generation Drive Array, second controller
1813 0 = /dev/cciss/c1d0 First logical drive, whole disk
1814 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1815 ...
1816 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1818 Partitions are handled the same way as for Mylex
1819 DAC960 (see major number 48) except that the limit on
1820 partitions is 15.
1822 106 char Comtrol VS-1000 serial controller - alternate devices
1823 0 = /dev/cuv0 First VS-1000 port
1824 1 = /dev/cuv1 Second VS-1000 port
1825 ...
1827 106 block Compaq Next Generation Drive Array, third controller
1828 0 = /dev/cciss/c2d0 First logical drive, whole disk
1829 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1830 ...
1831 240 = /dev/cciss/c2d15 16th logical drive, whole disk
1833 Partitions are handled the same way as for Mylex
1834 DAC960 (see major number 48) except that the limit on
1835 partitions is 15.
1837 107 char 3Dfx Voodoo Graphics device
1838 0 = /dev/3dfx Primary 3Dfx graphics device
1840 107 block Compaq Next Generation Drive Array, fourth controller
1841 0 = /dev/cciss/c3d0 First logical drive, whole disk
1842 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1843 ...
1844 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1846 Partitions are handled the same way as for Mylex
1847 DAC960 (see major number 48) except that the limit on
1848 partitions is 15.
1850 108 char Device independent PPP interface
1851 0 = /dev/ppp Device independent PPP interface
1853 108 block Compaq Next Generation Drive Array, fifth controller
1854 0 = /dev/cciss/c4d0 First logical drive, whole disk
1855 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1856 ...
1857 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1859 Partitions are handled the same way as for Mylex
1860 DAC960 (see major number 48) except that the limit on
1861 partitions is 15.
1863 109 char Reserved for logical volume manager
1865 109 block Compaq Next Generation Drive Array, sixth controller
1866 0 = /dev/cciss/c5d0 First logical drive, whole disk
1867 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1868 ...
1869 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1871 Partitions are handled the same way as for Mylex
1872 DAC960 (see major number 48) except that the limit on
1873 partitions is 15.
1875 110 char miroMEDIA Surround board
1876 0 = /dev/srnd0 First miroMEDIA Surround board
1877 1 = /dev/srnd1 Second miroMEDIA Surround board
1878 ...
1880 110 block Compaq Next Generation Drive Array, seventh controller
1881 0 = /dev/cciss/c6d0 First logical drive, whole disk
1882 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1883 ...
1884 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1886 Partitions are handled the same way as for Mylex
1887 DAC960 (see major number 48) except that the limit on
1888 partitions is 15.
1890 111 char
1892 111 block Compaq Next Generation Drive Array, eighth controller
1893 0 = /dev/cciss/c7d0 First logical drive, whole disk
1894 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1895 ...
1896 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1898 Partitions are handled the same way as for Mylex
1899 DAC960 (see major number 48) except that the limit on
1900 partitions is 15.
1902 112 char ISI serial card
1903 0 = /dev/ttyM0 First ISI port
1904 1 = /dev/ttyM1 Second ISI port
1905 ...
1907 There is currently a device-naming conflict between
1908 these and PAM multimodems (major 78).
1910 112 block IBM iSeries virtual disk
1911 0 = /dev/iseries/vda First virtual disk, whole disk
1912 8 = /dev/iseries/vdb Second virtual disk, whole disk
1913 ...
1914 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1915 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1916 ...
1917 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1919 Partitions are handled in the same way as for IDE
1920 disks (see major number 3) except that the limit on
1921 partitions is 7.
1923 113 char ISI serial card - alternate devices
1924 0 = /dev/cum0 Callout device for ttyM0
1925 1 = /dev/cum1 Callout device for ttyM1
1926 ...
1928 113 block IBM iSeries virtual CD-ROM
1929 0 = /dev/iseries/vcda First virtual CD-ROM
1930 1 = /dev/iseries/vcdb Second virtual CD-ROM
1931 ...
1933 114 char Picture Elements ISE board
1934 0 = /dev/ise0 First ISE board
1935 1 = /dev/ise1 Second ISE board
1936 ...
1937 128 = /dev/isex0 Control node for first ISE board
1938 129 = /dev/isex1 Control node for second ISE board
1939 ...
1941 The ISE board is an embedded computer, optimized for
1942 image processing. The /dev/iseN nodes are the general
1943 I/O access to the board, the /dev/isex0 nodes command
1944 nodes used to control the board.
1946 114 block IDE BIOS powered software RAID interfaces such as the
1947 Promise Fastrak
1949 0 = /dev/ataraid/d0
1950 1 = /dev/ataraid/d0p1
1951 2 = /dev/ataraid/d0p2
1952 ...
1953 16 = /dev/ataraid/d1
1954 17 = /dev/ataraid/d1p1
1955 18 = /dev/ataraid/d1p2
1956 ...
1957 255 = /dev/ataraid/d15p15
1959 Partitions are handled in the same way as for IDE
1960 disks (see major number 3) except that the limit on
1961 partitions is 15.
1963 115 char TI link cable devices (115 was formerly the console driver speaker)
1964 0 = /dev/tipar0 Parallel cable on first parallel port
1965 ...
1966 7 = /dev/tipar7 Parallel cable on seventh parallel port
1968 8 = /dev/tiser0 Serial cable on first serial port
1969 ...
1970 15 = /dev/tiser7 Serial cable on seventh serial port
1972 16 = /dev/tiusb0 First USB cable
1973 ...
1974 47 = /dev/tiusb31 32nd USB cable
1976 115 block NetWare (NWFS) Devices (0-255)
1978 The NWFS (NetWare) devices are used to present a
1979 collection of NetWare Mirror Groups or NetWare
1980 Partitions as a logical storage segment for
1981 use in mounting NetWare volumes. A maximum of
1982 256 NetWare volumes can be supported in a single
1983 machine.
1985 http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1987 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1988 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1989 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1990 ...
1991 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1993 116 char Advanced Linux Sound Driver (ALSA)
1995 116 block MicroMemory battery backed RAM adapter (NVRAM)
1996 Supports 16 boards, 15 partitions each.
1997 Requested by neilb at cse.unsw.edu.au.
1999 0 = /dev/umem/d0 Whole of first board
2000 1 = /dev/umem/d0p1 First partition of first board
2001 2 = /dev/umem/d0p2 Second partition of first board
2002 15 = /dev/umem/d0p15 15th partition of first board
2004 16 = /dev/umem/d1 Whole of second board
2005 17 = /dev/umem/d1p1 First partition of second board
2006 ...
2007 255= /dev/umem/d15p15 15th partition of 16th board.
2009 117 char COSA/SRP synchronous serial card
2010 0 = /dev/cosa0c0 1st board, 1st channel
2011 1 = /dev/cosa0c1 1st board, 2nd channel
2012 ...
2013 16 = /dev/cosa1c0 2nd board, 1st channel
2014 17 = /dev/cosa1c1 2nd board, 2nd channel
2015 ...
2017 117 block Enterprise Volume Management System (EVMS)
2019 The EVMS driver uses a layered, plug-in model to provide
2020 unparalleled flexibility and extensibility in managing
2021 storage. This allows for easy expansion or customization
2022 of various levels of volume management. Requested by
2023 Mark Peloquin (peloquin at us.ibm.com).
2025 Note: EVMS populates and manages all the devnodes in
2026 /dev/evms.
2028 http://sf.net/projects/evms
2030 0 = /dev/evms/block_device EVMS block device
2031 1 = /dev/evms/legacyname1 First EVMS legacy device
2032 2 = /dev/evms/legacyname2 Second EVMS legacy device
2033 ...
2034 Both ranges can grow (down or up) until they meet.
2035 ...
2036 254 = /dev/evms/EVMSname2 Second EVMS native device
2037 255 = /dev/evms/EVMSname1 First EVMS native device
2039 Note: legacyname(s) are derived from the normal legacy
2040 device names. For example, /dev/hda5 would become
2041 /dev/evms/hda5.
2043 118 char IBM Cryptographic Accelerator
2044 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2045 1 = /dev/ica0 IBMCA Device 0
2046 2 = /dev/ica1 IBMCA Device 1
2047 ...
2049 119 char VMware virtual network control
2050 0 = /dev/vnet0 1st virtual network
2051 1 = /dev/vnet1 2nd virtual network
2052 ...
2054 120-127 char LOCAL/EXPERIMENTAL USE
2056 120-127 block LOCAL/EXPERIMENTAL USE
2057 Allocated for local/experimental use. For devices not
2058 assigned official numbers, these ranges should be
2059 used in order to avoid conflicting with future assignments.
2061 128-135 char Unix98 PTY masters
2063 These devices should not have corresponding device
2064 nodes; instead they should be accessed through the
2065 /dev/ptmx cloning interface.
2067 128 block SCSI disk devices (128-143)
2068 0 = /dev/sddy 129th SCSI disk whole disk
2069 16 = /dev/sddz 130th SCSI disk whole disk
2070 32 = /dev/sdea 131th SCSI disk whole disk
2071 ...
2072 240 = /dev/sden 144th SCSI disk whole disk
2074 Partitions are handled in the same way as for IDE
2075 disks (see major number 3) except that the limit on
2076 partitions is 15.
2078 129 block SCSI disk devices (144-159)
2079 0 = /dev/sdeo 145th SCSI disk whole disk
2080 16 = /dev/sdep 146th SCSI disk whole disk
2081 32 = /dev/sdeq 147th SCSI disk whole disk
2082 ...
2083 240 = /dev/sdfd 160th SCSI disk whole disk
2085 Partitions are handled in the same way as for IDE
2086 disks (see major number 3) except that the limit on
2087 partitions is 15.
2089 130 char (Misc devices)
2091 130 block SCSI disk devices (160-175)
2092 0 = /dev/sdfe 161st SCSI disk whole disk
2093 16 = /dev/sdff 162nd SCSI disk whole disk
2094 32 = /dev/sdfg 163rd SCSI disk whole disk
2095 ...
2096 240 = /dev/sdft 176th SCSI disk whole disk
2098 Partitions are handled in the same way as for IDE
2099 disks (see major number 3) except that the limit on
2100 partitions is 15.
2102 131 block SCSI disk devices (176-191)
2103 0 = /dev/sdfu 177th SCSI disk whole disk
2104 16 = /dev/sdfv 178th SCSI disk whole disk
2105 32 = /dev/sdfw 179th SCSI disk whole disk
2106 ...
2107 240 = /dev/sdgj 192nd SCSI disk whole disk
2109 Partitions are handled in the same way as for IDE
2110 disks (see major number 3) except that the limit on
2111 partitions is 15.
2113 132 block SCSI disk devices (192-207)
2114 0 = /dev/sdgk 193rd SCSI disk whole disk
2115 16 = /dev/sdgl 194th SCSI disk whole disk
2116 32 = /dev/sdgm 195th SCSI disk whole disk
2117 ...
2118 240 = /dev/sdgz 208th SCSI disk whole disk
2120 Partitions are handled in the same way as for IDE
2121 disks (see major number 3) except that the limit on
2122 partitions is 15.
2124 133 block SCSI disk devices (208-223)
2125 0 = /dev/sdha 209th SCSI disk whole disk
2126 16 = /dev/sdhb 210th SCSI disk whole disk
2127 32 = /dev/sdhc 211th SCSI disk whole disk
2128 ...
2129 240 = /dev/sdhp 224th SCSI disk whole disk
2131 Partitions are handled in the same way as for IDE
2132 disks (see major number 3) except that the limit on
2133 partitions is 15.
2135 134 block SCSI disk devices (224-239)
2136 0 = /dev/sdhq 225th SCSI disk whole disk
2137 16 = /dev/sdhr 226th SCSI disk whole disk
2138 32 = /dev/sdhs 227th SCSI disk whole disk
2139 ...
2140 240 = /dev/sdif 240th SCSI disk whole disk
2142 Partitions are handled in the same way as for IDE
2143 disks (see major number 3) except that the limit on
2144 partitions is 15.
2146 135 block SCSI disk devices (240-255)
2147 0 = /dev/sdig 241st SCSI disk whole disk
2148 16 = /dev/sdih 242nd SCSI disk whole disk
2149 32 = /dev/sdih 243rd SCSI disk whole disk
2150 ...
2151 240 = /dev/sdiv 256th SCSI disk whole disk
2153 Partitions are handled in the same way as for IDE
2154 disks (see major number 3) except that the limit on
2155 partitions is 15.
2157 136-143 char Unix98 PTY slaves
2158 0 = /dev/pts/0 First Unix98 pseudo-TTY
2159 1 = /dev/pts/1 Second Unix98 pseudo-TTY
2160 ...
2162 These device nodes are automatically generated with
2163 the proper permissions and modes by mounting the
2164 devpts filesystem onto /dev/pts with the appropriate
2165 mount options (distribution dependent, however, on
2166 *most* distributions the appropriate options are
2167 "mode=0620,gid=<gid of the "tty" group>".)
2169 136 block Mylex DAC960 PCI RAID controller; ninth controller
2170 0 = /dev/rd/c8d0 First disk, whole disk
2171 8 = /dev/rd/c8d1 Second disk, whole disk
2172 ...
2173 248 = /dev/rd/c8d31 32nd disk, whole disk
2175 Partitions are handled as for major 48.
2177 137 block Mylex DAC960 PCI RAID controller; tenth controller
2178 0 = /dev/rd/c9d0 First disk, whole disk
2179 8 = /dev/rd/c9d1 Second disk, whole disk
2180 ...
2181 248 = /dev/rd/c9d31 32nd disk, whole disk
2183 Partitions are handled as for major 48.
2185 138 block Mylex DAC960 PCI RAID controller; eleventh controller
2186 0 = /dev/rd/c10d0 First disk, whole disk
2187 8 = /dev/rd/c10d1 Second disk, whole disk
2188 ...
2189 248 = /dev/rd/c10d31 32nd disk, whole disk
2191 Partitions are handled as for major 48.
2193 139 block Mylex DAC960 PCI RAID controller; twelfth controller
2194 0 = /dev/rd/c11d0 First disk, whole disk
2195 8 = /dev/rd/c11d1 Second disk, whole disk
2196 ...
2197 248 = /dev/rd/c11d31 32nd disk, whole disk
2199 Partitions are handled as for major 48.
2201 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2202 0 = /dev/rd/c12d0 First disk, whole disk
2203 8 = /dev/rd/c12d1 Second disk, whole disk
2204 ...
2205 248 = /dev/rd/c12d31 32nd disk, whole disk
2207 Partitions are handled as for major 48.
2209 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2210 0 = /dev/rd/c13d0 First disk, whole disk
2211 8 = /dev/rd/c13d1 Second disk, whole disk
2212 ...
2213 248 = /dev/rd/c13d31 32nd disk, whole disk
2215 Partitions are handled as for major 48.
2217 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2218 0 = /dev/rd/c14d0 First disk, whole disk
2219 8 = /dev/rd/c14d1 Second disk, whole disk
2220 ...
2221 248 = /dev/rd/c14d31 32nd disk, whole disk
2223 Partitions are handled as for major 48.
2225 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2226 0 = /dev/rd/c15d0 First disk, whole disk
2227 8 = /dev/rd/c15d1 Second disk, whole disk
2228 ...
2229 248 = /dev/rd/c15d31 32nd disk, whole disk
2231 Partitions are handled as for major 48.
2233 144 char Encapsulated PPP
2234 0 = /dev/pppox0 First PPP over Ethernet
2235 ...
2236 63 = /dev/pppox63 64th PPP over Ethernet
2238 This is primarily used for ADSL.
2240 The SST 5136-DN DeviceNet interface driver has been
2241 relocated to major 183 due to an unfortunate conflict.
2243 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2244 0 = mounted device 256
2245 255 = mounted device 511
2247 145 char SAM9407-based soundcard
2248 0 = /dev/sam0_mixer
2249 1 = /dev/sam0_sequencer
2250 2 = /dev/sam0_midi00
2251 3 = /dev/sam0_dsp
2252 4 = /dev/sam0_audio
2253 6 = /dev/sam0_sndstat
2254 18 = /dev/sam0_midi01
2255 34 = /dev/sam0_midi02
2256 50 = /dev/sam0_midi03
2257 64 = /dev/sam1_mixer
2258 ...
2259 128 = /dev/sam2_mixer
2260 ...
2261 192 = /dev/sam3_mixer
2262 ...
2264 Device functions match OSS, but offer a number of
2265 addons, which are sam9407 specific. OSS can be
2266 operated simultaneously, taking care of the codec.
2268 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2269 0 = mounted device 512
2270 255 = mounted device 767
2272 146 char SYSTRAM SCRAMNet mirrored-memory network
2273 0 = /dev/scramnet0 First SCRAMNet device
2274 1 = /dev/scramnet1 Second SCRAMNet device
2275 ...
2277 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2278 0 = mounted device 768
2279 255 = mounted device 1023
2281 147 char Aureal Semiconductor Vortex Audio device
2282 0 = /dev/aureal0 First Aureal Vortex
2283 1 = /dev/aureal1 Second Aureal Vortex
2284 ...
2286 147 block Distributed Replicated Block Device (DRBD)
2287 0 = /dev/drbd0 First DRBD device
2288 1 = /dev/drbd1 Second DRBD device
2289 ...
2291 148 char Technology Concepts serial card
2292 0 = /dev/ttyT0 First TCL port
2293 1 = /dev/ttyT1 Second TCL port
2294 ...
2296 149 char Technology Concepts serial card - alternate devices
2297 0 = /dev/cut0 Callout device for ttyT0
2298 1 = /dev/cut0 Callout device for ttyT1
2299 ...
2301 150 char Real-Time Linux FIFOs
2302 0 = /dev/rtf0 First RTLinux FIFO
2303 1 = /dev/rtf1 Second RTLinux FIFO
2304 ...
2306 151 char DPT I2O SmartRaid V controller
2307 0 = /dev/dpti0 First DPT I2O adapter
2308 1 = /dev/dpti1 Second DPT I2O adapter
2309 ...
2311 152 char EtherDrive Control Device
2312 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2313 1 = /dev/etherd/err Monitor errors
2314 2 = /dev/etherd/raw Raw AoE packet monitor
2316 152 block EtherDrive Block Devices
2317 0 = /dev/etherd/0 EtherDrive 0
2318 ...
2319 255 = /dev/etherd/255 EtherDrive 255
2321 153 char SPI Bus Interface (sometimes referred to as MicroWire)
2322 0 = /dev/spi0 First SPI device on the bus
2323 1 = /dev/spi1 Second SPI device on the bus
2324 ...
2325 15 = /dev/spi15 Sixteenth SPI device on the bus
2327 153 block Enhanced Metadisk RAID (EMD) storage units
2328 0 = /dev/emd/0 First unit
2329 1 = /dev/emd/0p1 Partition 1 on First unit
2330 2 = /dev/emd/0p2 Partition 2 on First unit
2331 ...
2332 15 = /dev/emd/0p15 Partition 15 on First unit
2334 16 = /dev/emd/1 Second unit
2335 32 = /dev/emd/2 Third unit
2336 ...
2337 240 = /dev/emd/15 Sixteenth unit
2339 Partitions are handled in the same way as for IDE
2340 disks (see major number 3) except that the limit on
2341 partitions is 15.
2343 154 char Specialix RIO serial card
2344 0 = /dev/ttySR0 First RIO port
2345 ...
2346 255 = /dev/ttySR255 256th RIO port
2348 155 char Specialix RIO serial card - alternate devices
2349 0 = /dev/cusr0 Callout device for ttySR0
2350 ...
2351 255 = /dev/cusr255 Callout device for ttySR255
2353 156 char Specialix RIO serial card
2354 0 = /dev/ttySR256 257th RIO port
2355 ...
2356 255 = /dev/ttySR511 512th RIO port
2358 157 char Specialix RIO serial card - alternate devices
2359 0 = /dev/cusr256 Callout device for ttySR256
2360 ...
2361 255 = /dev/cusr511 Callout device for ttySR511
2363 158 char Dialogic GammaLink fax driver
2364 0 = /dev/gfax0 GammaLink channel 0
2365 1 = /dev/gfax1 GammaLink channel 1
2366 ...
2368 159 char RESERVED
2370 159 block RESERVED
2372 160 char General Purpose Instrument Bus (GPIB)
2373 0 = /dev/gpib0 First GPIB bus
2374 1 = /dev/gpib1 Second GPIB bus
2375 ...
2377 160 block Carmel 8-port SATA Disks on First Controller
2378 0 = /dev/carmel/0 SATA disk 0 whole disk
2379 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2380 ...
2381 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2383 32 = /dev/carmel/1 SATA disk 1 whole disk
2384 64 = /dev/carmel/2 SATA disk 2 whole disk
2385 ...
2386 224 = /dev/carmel/7 SATA disk 7 whole disk
2388 Partitions are handled in the same way as for IDE
2389 disks (see major number 3) except that the limit on
2390 partitions is 31.
2392 161 char IrCOMM devices (IrDA serial/parallel emulation)
2393 0 = /dev/ircomm0 First IrCOMM device
2394 1 = /dev/ircomm1 Second IrCOMM device
2395 ...
2396 16 = /dev/irlpt0 First IrLPT device
2397 17 = /dev/irlpt1 Second IrLPT device
2398 ...
2400 161 block Carmel 8-port SATA Disks on Second Controller
2401 0 = /dev/carmel/8 SATA disk 8 whole disk
2402 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2403 ...
2404 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2406 32 = /dev/carmel/9 SATA disk 9 whole disk
2407 64 = /dev/carmel/10 SATA disk 10 whole disk
2408 ...
2409 224 = /dev/carmel/15 SATA disk 15 whole disk
2411 Partitions are handled in the same way as for IDE
2412 disks (see major number 3) except that the limit on
2413 partitions is 31.
2415 162 char Raw block device interface
2416 0 = /dev/rawctl Raw I/O control device
2417 1 = /dev/raw/raw1 First raw I/O device
2418 2 = /dev/raw/raw2 Second raw I/O device
2419 ...
2421 163 char
2423 164 char Chase Research AT/PCI-Fast serial card
2424 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2425 ...
2426 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2427 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2428 ...
2429 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2430 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2431 ...
2432 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2433 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2434 ...
2435 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2437 165 char Chase Research AT/PCI-Fast serial card - alternate devices
2438 0 = /dev/cuch0 Callout device for ttyCH0
2439 ...
2440 63 = /dev/cuch63 Callout device for ttyCH63
2442 166 char ACM USB modems
2443 0 = /dev/ttyACM0 First ACM modem
2444 1 = /dev/ttyACM1 Second ACM modem
2445 ...
2447 167 char ACM USB modems - alternate devices
2448 0 = /dev/cuacm0 Callout device for ttyACM0
2449 1 = /dev/cuacm1 Callout device for ttyACM1
2450 ...
2452 168 char Eracom CSA7000 PCI encryption adaptor
2453 0 = /dev/ecsa0 First CSA7000
2454 1 = /dev/ecsa1 Second CSA7000
2455 ...
2457 169 char Eracom CSA8000 PCI encryption adaptor
2458 0 = /dev/ecsa8-0 First CSA8000
2459 1 = /dev/ecsa8-1 Second CSA8000
2460 ...
2462 170 char AMI MegaRAC remote access controller
2463 0 = /dev/megarac0 First MegaRAC card
2464 1 = /dev/megarac1 Second MegaRAC card
2465 ...
2467 171 char Reserved for IEEE 1394 (Firewire)
2469 172 char Moxa Intellio serial card
2470 0 = /dev/ttyMX0 First Moxa port
2471 1 = /dev/ttyMX1 Second Moxa port
2472 ...
2473 127 = /dev/ttyMX127 128th Moxa port
2474 128 = /dev/moxactl Moxa control port
2476 173 char Moxa Intellio serial card - alternate devices
2477 0 = /dev/cumx0 Callout device for ttyMX0
2478 1 = /dev/cumx1 Callout device for ttyMX1
2479 ...
2480 127 = /dev/cumx127 Callout device for ttyMX127
2482 174 char SmartIO serial card
2483 0 = /dev/ttySI0 First SmartIO port
2484 1 = /dev/ttySI1 Second SmartIO port
2485 ...
2487 175 char SmartIO serial card - alternate devices
2488 0 = /dev/cusi0 Callout device for ttySI0
2489 1 = /dev/cusi1 Callout device for ttySI1
2490 ...
2492 176 char nCipher nFast PCI crypto accelerator
2493 0 = /dev/nfastpci0 First nFast PCI device
2494 1 = /dev/nfastpci1 First nFast PCI device
2495 ...
2497 177 char TI PCILynx memory spaces
2498 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2499 ...
2500 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2501 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2502 ...
2503 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2504 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2505 ...
2506 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2508 178 char Giganet cLAN1xxx virtual interface adapter
2509 0 = /dev/clanvi0 First cLAN adapter
2510 1 = /dev/clanvi1 Second cLAN adapter
2511 ...
2513 179 block MMC block devices
2514 0 = /dev/mmcblk0 First SD/MMC card
2515 1 = /dev/mmcblk0p1 First partition on first MMC card
2516 8 = /dev/mmcblk1 Second SD/MMC card
2517 ...
2519 179 char CCube DVXChip-based PCI products
2520 0 = /dev/dvxirq0 First DVX device
2521 1 = /dev/dvxirq1 Second DVX device
2522 ...
2524 180 char USB devices
2525 0 = /dev/usb/lp0 First USB printer
2526 ...
2527 15 = /dev/usb/lp15 16th USB printer
2528 48 = /dev/usb/scanner0 First USB scanner
2529 ...
2530 63 = /dev/usb/scanner15 16th USB scanner
2531 64 = /dev/usb/rio500 Diamond Rio 500
2532 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2533 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2534 96 = /dev/usb/hiddev0 1st USB HID device
2535 ...
2536 111 = /dev/usb/hiddev15 16th USB HID device
2537 112 = /dev/usb/auer0 1st auerswald ISDN device
2538 ...
2539 127 = /dev/usb/auer15 16th auerswald ISDN device
2540 128 = /dev/usb/brlvgr0 First Braille Voyager device
2541 ...
2542 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2543 132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2544 133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2545 ...
2546 140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
2547 144 = /dev/usb/lcd USB LCD device
2548 160 = /dev/usb/legousbtower0 1st USB Legotower device
2549 ...
2550 175 = /dev/usb/legousbtower15 16th USB Legotower device
2551 176 = /dev/usb/usbtmc1 First USB TMC device
2552 ...
2553 192 = /dev/usb/usbtmc16 16th USB TMC device
2554 240 = /dev/usb/dabusb0 First daubusb device
2555 ...
2556 243 = /dev/usb/dabusb3 Fourth dabusb device
2558 180 block USB block devices
2559 0 = /dev/uba First USB block device
2560 8 = /dev/ubb Second USB block device
2561 16 = /dev/ubc Third USB block device
2562 ...
2564 181 char Conrad Electronic parallel port radio clocks
2565 0 = /dev/pcfclock0 First Conrad radio clock
2566 1 = /dev/pcfclock1 Second Conrad radio clock
2567 ...
2569 182 char Picture Elements THR2 binarizer
2570 0 = /dev/pethr0 First THR2 board
2571 1 = /dev/pethr1 Second THR2 board
2572 ...
2574 183 char SST 5136-DN DeviceNet interface
2575 0 = /dev/ss5136dn0 First DeviceNet interface
2576 1 = /dev/ss5136dn1 Second DeviceNet interface
2577 ...
2579 This device used to be assigned to major number 144.
2580 It had to be moved due to an unfortunate conflict.
2582 184 char Picture Elements' video simulator/sender
2583 0 = /dev/pevss0 First sender board
2584 1 = /dev/pevss1 Second sender board
2585 ...
2587 185 char InterMezzo high availability file system
2588 0 = /dev/intermezzo0 First cache manager
2589 1 = /dev/intermezzo1 Second cache manager
2590 ...
2592 See http://web.archive.org/web/20080115195241/
2593 http://inter-mezzo.org/index.html
2595 186 char Object-based storage control device
2596 0 = /dev/obd0 First obd control device
2597 1 = /dev/obd1 Second obd control device
2598 ...
2600 See ftp://ftp.lustre.org/pub/obd for code and information.
2602 187 char DESkey hardware encryption device
2603 0 = /dev/deskey0 First DES key
2604 1 = /dev/deskey1 Second DES key
2605 ...
2607 188 char USB serial converters
2608 0 = /dev/ttyUSB0 First USB serial converter
2609 1 = /dev/ttyUSB1 Second USB serial converter
2610 ...
2612 189 char USB serial converters - alternate devices
2613 0 = /dev/cuusb0 Callout device for ttyUSB0
2614 1 = /dev/cuusb1 Callout device for ttyUSB1
2615 ...
2617 190 char Kansas City tracker/tuner card
2618 0 = /dev/kctt0 First KCT/T card
2619 1 = /dev/kctt1 Second KCT/T card
2620 ...
2622 191 char Reserved for PCMCIA
2624 192 char Kernel profiling interface
2625 0 = /dev/profile Profiling control device
2626 1 = /dev/profile0 Profiling device for CPU 0
2627 2 = /dev/profile1 Profiling device for CPU 1
2628 ...
2630 193 char Kernel event-tracing interface
2631 0 = /dev/trace Tracing control device
2632 1 = /dev/trace0 Tracing device for CPU 0
2633 2 = /dev/trace1 Tracing device for CPU 1
2634 ...
2636 194 char linVideoStreams (LINVS)
2637 0 = /dev/mvideo/status0 Video compression status
2638 1 = /dev/mvideo/stream0 Video stream
2639 2 = /dev/mvideo/frame0 Single compressed frame
2640 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2641 4 = /dev/mvideo/codec0 Direct codec access
2642 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2644 16 = /dev/mvideo/status1 Second device
2645 ...
2646 32 = /dev/mvideo/status2 Third device
2647 ...
2648 ...
2649 240 = /dev/mvideo/status15 16th device
2650 ...
2652 195 char Nvidia graphics devices
2653 0 = /dev/nvidia0 First Nvidia card
2654 1 = /dev/nvidia1 Second Nvidia card
2655 ...
2656 255 = /dev/nvidiactl Nvidia card control device
2658 196 char Tormenta T1 card
2659 0 = /dev/tor/0 Master control channel for all cards
2660 1 = /dev/tor/1 First DS0
2661 2 = /dev/tor/2 Second DS0
2662 ...
2663 48 = /dev/tor/48 48th DS0
2664 49 = /dev/tor/49 First pseudo-channel
2665 50 = /dev/tor/50 Second pseudo-channel
2666 ...
2668 197 char OpenTNF tracing facility
2669 0 = /dev/tnf/t0 Trace 0 data extraction
2670 1 = /dev/tnf/t1 Trace 1 data extraction
2671 ...
2672 128 = /dev/tnf/status Tracing facility status
2673 130 = /dev/tnf/trace Tracing device
2675 198 char Total Impact TPMP2 quad coprocessor PCI card
2676 0 = /dev/tpmp2/0 First card
2677 1 = /dev/tpmp2/1 Second card
2678 ...
2680 199 char Veritas volume manager (VxVM) volumes
2681 0 = /dev/vx/rdsk/*/* First volume
2682 1 = /dev/vx/rdsk/*/* Second volume
2683 ...
2685 199 block Veritas volume manager (VxVM) volumes
2686 0 = /dev/vx/dsk/*/* First volume
2687 1 = /dev/vx/dsk/*/* Second volume
2688 ...
2690 The namespace in these directories is maintained by
2691 the user space VxVM software.
2693 200 char Veritas VxVM configuration interface
2694 0 = /dev/vx/config Configuration access node
2695 1 = /dev/vx/trace Volume i/o trace access node
2696 2 = /dev/vx/iod Volume i/o daemon access node
2697 3 = /dev/vx/info Volume information access node
2698 4 = /dev/vx/task Volume tasks access node
2699 5 = /dev/vx/taskmon Volume tasks monitor daemon
2701 201 char Veritas VxVM dynamic multipathing driver
2702 0 = /dev/vx/rdmp/* First multipath device
2703 1 = /dev/vx/rdmp/* Second multipath device
2704 ...
2705 201 block Veritas VxVM dynamic multipathing driver
2706 0 = /dev/vx/dmp/* First multipath device
2707 1 = /dev/vx/dmp/* Second multipath device
2708 ...
2710 The namespace in these directories is maintained by
2711 the user space VxVM software.
2713 202 char CPU model-specific registers
2714 0 = /dev/cpu/0/msr MSRs on CPU 0
2715 1 = /dev/cpu/1/msr MSRs on CPU 1
2716 ...
2718 202 block Xen Virtual Block Device
2719 0 = /dev/xvda First Xen VBD whole disk
2720 16 = /dev/xvdb Second Xen VBD whole disk
2721 32 = /dev/xvdc Third Xen VBD whole disk
2722 ...
2723 240 = /dev/xvdp Sixteenth Xen VBD whole disk
2725 Partitions are handled in the same way as for IDE
2726 disks (see major number 3) except that the limit on
2727 partitions is 15.
2729 203 char CPU CPUID information
2730 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2731 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2732 ...
2734 204 char Low-density serial ports
2735 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2736 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2737 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2738 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2739 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2740 5 = /dev/ttySA0 StrongARM builtin serial port 0
2741 6 = /dev/ttySA1 StrongARM builtin serial port 1
2742 7 = /dev/ttySA2 StrongARM builtin serial port 2
2743 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2744 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2745 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2746 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2747 12 = /dev/ttyFW0 Firmware console - port 0
2748 13 = /dev/ttyFW1 Firmware console - port 1
2749 14 = /dev/ttyFW2 Firmware console - port 2
2750 15 = /dev/ttyFW3 Firmware console - port 3
2751 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2752 ...
2753 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2754 32 = /dev/ttyDB0 DataBooster serial port 0
2755 ...
2756 39 = /dev/ttyDB7 DataBooster serial port 7
2757 40 = /dev/ttySG0 SGI Altix console port
2758 41 = /dev/ttySMX0 Motorola i.MX - port 0
2759 42 = /dev/ttySMX1 Motorola i.MX - port 1
2760 43 = /dev/ttySMX2 Motorola i.MX - port 2
2761 44 = /dev/ttyMM0 Marvell MPSC - port 0
2762 45 = /dev/ttyMM1 Marvell MPSC - port 1
2763 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2764 ...
2765 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2766 50 = /dev/ttyIOC0 Altix serial card
2767 ...
2768 81 = /dev/ttyIOC31 Altix serial card
2769 82 = /dev/ttyVR0 NEC VR4100 series SIU
2770 83 = /dev/ttyVR1 NEC VR4100 series DSIU
2771 84 = /dev/ttyIOC84 Altix ioc4 serial card
2772 ...
2773 115 = /dev/ttyIOC115 Altix ioc4 serial card
2774 116 = /dev/ttySIOC0 Altix ioc3 serial card
2775 ...
2776 147 = /dev/ttySIOC31 Altix ioc3 serial card
2777 148 = /dev/ttyPSC0 PPC PSC - port 0
2778 ...
2779 153 = /dev/ttyPSC5 PPC PSC - port 5
2780 154 = /dev/ttyAT0 ATMEL serial port 0
2781 ...
2782 169 = /dev/ttyAT15 ATMEL serial port 15
2783 170 = /dev/ttyNX0 Hilscher netX serial port 0
2784 ...
2785 185 = /dev/ttyNX15 Hilscher netX serial port 15
2786 186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2787 187 = /dev/ttyUL0 Xilinx uartlite - port 0
2788 ...
2789 190 = /dev/ttyUL3 Xilinx uartlite - port 3
2790 191 = /dev/xvc0 Xen virtual console - port 0
2791 192 = /dev/ttyPZ0 pmac_zilog - port 0
2792 ...
2793 195 = /dev/ttyPZ3 pmac_zilog - port 3
2794 196 = /dev/ttyTX0 TX39/49 serial port 0
2795 ...
2796 204 = /dev/ttyTX7 TX39/49 serial port 7
2797 205 = /dev/ttySC0 SC26xx serial port 0
2798 206 = /dev/ttySC1 SC26xx serial port 1
2799 207 = /dev/ttySC2 SC26xx serial port 2
2800 208 = /dev/ttySC3 SC26xx serial port 3
2801 209 = /dev/ttyMAX0 MAX3100 serial port 0
2802 210 = /dev/ttyMAX1 MAX3100 serial port 1
2803 211 = /dev/ttyMAX2 MAX3100 serial port 2
2804 212 = /dev/ttyMAX3 MAX3100 serial port 3
2806 205 char Low-density serial ports (alternate device)
2807 0 = /dev/culu0 Callout device for ttyLU0
2808 1 = /dev/culu1 Callout device for ttyLU1
2809 2 = /dev/culu2 Callout device for ttyLU2
2810 3 = /dev/culu3 Callout device for ttyLU3
2811 4 = /dev/cufb0 Callout device for ttyFB0
2812 5 = /dev/cusa0 Callout device for ttySA0
2813 6 = /dev/cusa1 Callout device for ttySA1
2814 7 = /dev/cusa2 Callout device for ttySA2
2815 8 = /dev/cusc0 Callout device for ttySC0
2816 9 = /dev/cusc1 Callout device for ttySC1
2817 10 = /dev/cusc2 Callout device for ttySC2
2818 11 = /dev/cusc3 Callout device for ttySC3
2819 12 = /dev/cufw0 Callout device for ttyFW0
2820 13 = /dev/cufw1 Callout device for ttyFW1
2821 14 = /dev/cufw2 Callout device for ttyFW2
2822 15 = /dev/cufw3 Callout device for ttyFW3
2823 16 = /dev/cuam0 Callout device for ttyAM0
2824 ...
2825 31 = /dev/cuam15 Callout device for ttyAM15
2826 32 = /dev/cudb0 Callout device for ttyDB0
2827 ...
2828 39 = /dev/cudb7 Callout device for ttyDB7
2829 40 = /dev/cusg0 Callout device for ttySG0
2830 41 = /dev/ttycusmx0 Callout device for ttySMX0
2831 42 = /dev/ttycusmx1 Callout device for ttySMX1
2832 43 = /dev/ttycusmx2 Callout device for ttySMX2
2833 46 = /dev/cucpm0 Callout device for ttyCPM0
2834 ...
2835 49 = /dev/cucpm5 Callout device for ttyCPM5
2836 50 = /dev/cuioc40 Callout device for ttyIOC40
2837 ...
2838 81 = /dev/cuioc431 Callout device for ttyIOC431
2839 82 = /dev/cuvr0 Callout device for ttyVR0
2840 83 = /dev/cuvr1 Callout device for ttyVR1
2842 206 char OnStream SC-x0 tape devices
2843 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2844 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2845 ...
2846 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2847 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2848 ...
2849 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2850 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2851 ...
2852 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2853 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2854 ...
2855 128 = /dev/nosst0 No rewind version of /dev/osst0
2856 129 = /dev/nosst1 No rewind version of /dev/osst1
2857 ...
2858 160 = /dev/nosst0l No rewind version of /dev/osst0l
2859 161 = /dev/nosst1l No rewind version of /dev/osst1l
2860 ...
2861 192 = /dev/nosst0m No rewind version of /dev/osst0m
2862 193 = /dev/nosst1m No rewind version of /dev/osst1m
2863 ...
2864 224 = /dev/nosst0a No rewind version of /dev/osst0a
2865 225 = /dev/nosst1a No rewind version of /dev/osst1a
2866 ...
2868 The OnStream SC-x0 SCSI tapes do not support the
2869 standard SCSI SASD command set and therefore need
2870 their own driver "osst". Note that the IDE, USB (and
2871 maybe ParPort) versions may be driven via ide-scsi or
2872 usb-storage SCSI emulation and this osst device and
2873 driver as well. The ADR-x0 drives are QIC-157
2874 compliant and don't need osst.
2876 207 char Compaq ProLiant health feature indicate
2877 0 = /dev/cpqhealth/cpqw Redirector interface
2878 1 = /dev/cpqhealth/crom EISA CROM
2879 2 = /dev/cpqhealth/cdt Data Table
2880 3 = /dev/cpqhealth/cevt Event Log
2881 4 = /dev/cpqhealth/casr Automatic Server Recovery
2882 5 = /dev/cpqhealth/cecc ECC Memory
2883 6 = /dev/cpqhealth/cmca Machine Check Architecture
2884 7 = /dev/cpqhealth/ccsm Deprecated CDT
2885 8 = /dev/cpqhealth/cnmi NMI Handling
2886 9 = /dev/cpqhealth/css Sideshow Management
2887 10 = /dev/cpqhealth/cram CMOS interface
2888 11 = /dev/cpqhealth/cpci PCI IRQ interface
2890 208 char User space serial ports
2891 0 = /dev/ttyU0 First user space serial port
2892 1 = /dev/ttyU1 Second user space serial port
2893 ...
2895 209 char User space serial ports (alternate devices)
2896 0 = /dev/cuu0 Callout device for ttyU0
2897 1 = /dev/cuu1 Callout device for ttyU1
2898 ...
2900 210 char SBE, Inc. sync/async serial card
2901 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2902 1 = /dev/sbei/dld0 Download device for board 0
2903 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2904 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2905 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2906 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2907 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2908 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2909 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2910 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2911 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2912 11 = /dev/sbei/dld1 Download device for board 1
2913 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2914 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2915 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2916 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2917 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2918 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2919 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2920 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2921 ...
2923 Yes, each board is really spaced 10 (decimal) apart.
2925 211 char Addinum CPCI1500 digital I/O card
2926 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2927 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2928 ...
2930 212 char LinuxTV.org DVB driver subsystem
2931 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2932 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2933 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2934 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2935 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2936 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2937 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2938 7 = /dev/dvb/adapter0/net0 first network device of first card
2939 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2940 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2941 ...
2942 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2943 ...
2944 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2945 ...
2946 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2948 216 char Bluetooth RFCOMM TTY devices
2949 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2950 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2951 ...
2953 217 char Bluetooth RFCOMM TTY devices (alternate devices)
2954 0 = /dev/curf0 Callout device for rfcomm0
2955 1 = /dev/curf1 Callout device for rfcomm1
2956 ...
2958 218 char The Logical Company bus Unibus/Qbus adapters
2959 0 = /dev/logicalco/bci/0 First bus adapter
2960 1 = /dev/logicalco/bci/1 First bus adapter
2961 ...
2963 219 char The Logical Company DCI-1300 digital I/O card
2964 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2965 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2966 ...
2968 220 char Myricom Myrinet "GM" board
2969 0 = /dev/myricom/gm0 First Myrinet GM board
2970 1 = /dev/myricom/gmp0 First board "root access"
2971 2 = /dev/myricom/gm1 Second Myrinet GM board
2972 3 = /dev/myricom/gmp1 Second board "root access"
2973 ...
2975 221 char VME bus
2976 0 = /dev/bus/vme/m0 First master image
2977 1 = /dev/bus/vme/m1 Second master image
2978 2 = /dev/bus/vme/m2 Third master image
2979 3 = /dev/bus/vme/m3 Fourth master image
2980 4 = /dev/bus/vme/s0 First slave image
2981 5 = /dev/bus/vme/s1 Second slave image
2982 6 = /dev/bus/vme/s2 Third slave image
2983 7 = /dev/bus/vme/s3 Fourth slave image
2984 8 = /dev/bus/vme/ctl Control
2986 It is expected that all VME bus drivers will use the
2987 same interface. For interface documentation see
2988 http://www.vmelinux.org/.
2990 224 char A2232 serial card
2991 0 = /dev/ttyY0 First A2232 port
2992 1 = /dev/ttyY1 Second A2232 port
2993 ...
2995 225 char A2232 serial card (alternate devices)
2996 0 = /dev/cuy0 Callout device for ttyY0
2997 1 = /dev/cuy1 Callout device for ttyY1
2998 ...
3000 226 char Direct Rendering Infrastructure (DRI)
3001 0 = /dev/dri/card0 First graphics card
3002 1 = /dev/dri/card1 Second graphics card
3003 ...
3005 227 char IBM 3270 terminal Unix tty access
3006 1 = /dev/3270/tty1 First 3270 terminal
3007 2 = /dev/3270/tty2 Seconds 3270 terminal
3008 ...
3010 228 char IBM 3270 terminal block-mode access
3011 0 = /dev/3270/tub Controlling interface
3012 1 = /dev/3270/tub1 First 3270 terminal
3013 2 = /dev/3270/tub2 Second 3270 terminal
3014 ...
3016 229 char IBM iSeries/pSeries virtual console
3017 0 = /dev/hvc0 First console port
3018 1 = /dev/hvc1 Second console port
3019 ...
3021 230 char IBM iSeries virtual tape
3022 0 = /dev/iseries/vt0 First virtual tape, mode 0
3023 1 = /dev/iseries/vt1 Second virtual tape, mode 0
3024 ...
3025 32 = /dev/iseries/vt0l First virtual tape, mode 1
3026 33 = /dev/iseries/vt1l Second virtual tape, mode 1
3027 ...
3028 64 = /dev/iseries/vt0m First virtual tape, mode 2
3029 65 = /dev/iseries/vt1m Second virtual tape, mode 2
3030 ...
3031 96 = /dev/iseries/vt0a First virtual tape, mode 3
3032 97 = /dev/iseries/vt1a Second virtual tape, mode 3
3033 ...
3034 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3035 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3036 ...
3037 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3038 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3039 ...
3040 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3041 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3042 ...
3043 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3044 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3045 ...
3047 "No rewind" refers to the omission of the default
3048 automatic rewind on device close. The MTREW or MTOFFL
3049 ioctl()'s can be used to rewind the tape regardless of
3050 the device used to access it.
3052 231 char InfiniBand
3053 0 = /dev/infiniband/umad0
3054 1 = /dev/infiniband/umad1
3055 ...
3056 63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3057 64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3058 65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3059 ...
3060 127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3061 128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3062 129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3063 ...
3064 159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3066 232 char Biometric Devices
3067 0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3068 1 = /dev/biometric/sensor0/iris first iris sensor on first device
3069 2 = /dev/biometric/sensor0/retina first retina sensor on first device
3070 3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3071 4 = /dev/biometric/sensor0/facial first facial sensor on first device
3072 5 = /dev/biometric/sensor0/hand first hand sensor on first device
3073 ...
3074 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3075 ...
3076 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3077 ...
3079 233 char PathScale InfiniPath interconnect
3080 0 = /dev/ipath Primary device for programs (any unit)
3081 1 = /dev/ipath0 Access specifically to unit 0
3082 2 = /dev/ipath1 Access specifically to unit 1
3083 ...
3084 4 = /dev/ipath3 Access specifically to unit 3
3085 129 = /dev/ipath_sma Device used by Subnet Management Agent
3086 130 = /dev/ipath_diag Device used by diagnostics programs
3088 234-239 UNASSIGNED
3090 240-254 char LOCAL/EXPERIMENTAL USE
3092 240-254 block LOCAL/EXPERIMENTAL USE
3093 Allocated for local/experimental use. For devices not
3094 assigned official numbers, these ranges should be
3095 used in order to avoid conflicting with future assignments.
3097 255 char RESERVED
3099 255 block RESERVED
3101 This major is reserved to assist the expansion to a
3102 larger number space. No device nodes with this major
3103 should ever be created on the filesystem.
3104 (This is probably not true anymore, but I'll leave it
3105 for now /Torben)
3107 ---LARGE MAJORS!!!!!---
3109 256 char Equinox SST multi-port serial boards
3110 0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3111 127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3112 128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3113 ...
3114 1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3116 256 block Resident Flash Disk Flash Translation Layer
3117 0 = /dev/rfda First RFD FTL layer
3118 16 = /dev/rfdb Second RFD FTL layer
3119 ...
3120 240 = /dev/rfdp 16th RFD FTL layer
3122 257 char Phoenix Technologies Cryptographic Services Driver
3123 0 = /dev/ptlsec Crypto Services Driver
3125 257 block SSFDC Flash Translation Layer filesystem
3126 0 = /dev/ssfdca First SSFDC layer
3127 8 = /dev/ssfdcb Second SSFDC layer
3128 16 = /dev/ssfdcc Third SSFDC layer
3129 24 = /dev/ssfdcd 4th SSFDC layer
3130 32 = /dev/ssfdce 5th SSFDC layer
3131 40 = /dev/ssfdcf 6th SSFDC layer
3132 48 = /dev/ssfdcg 7th SSFDC layer
3133 56 = /dev/ssfdch 8th SSFDC layer
3135 258 block ROM/Flash read-only translation layer
3136 0 = /dev/blockrom0 First ROM card's translation layer interface
3137 1 = /dev/blockrom1 Second ROM card's translation layer interface
3138 ...
3140 259 block Block Extended Major
3141 Used dynamically to hold additional partition minor
3142 numbers and allow large numbers of partitions per device
3144 259 char FPGA configuration interfaces
3145 0 = /dev/icap0 First Xilinx internal configuration
3146 1 = /dev/icap1 Second Xilinx internal configuration
3148 260 char OSD (Object-based-device) SCSI Device
3149 0 = /dev/osd0 First OSD Device
3150 1 = /dev/osd1 Second OSD Device
3151 ...
3152 255 = /dev/osd255 256th OSD Device
3154 **** ADDITIONAL /dev DIRECTORY ENTRIES
3156 This section details additional entries that should or may exist in
3157 the /dev directory. It is preferred that symbolic links use the same
3158 form (absolute or relative) as is indicated here. Links are
3159 classified as "hard" or "symbolic" depending on the preferred type of
3160 link; if possible, the indicated type of link should be used.
3163 Compulsory links
3165 These links should exist on all systems:
3167 /dev/fd /proc/self/fd symbolic File descriptors
3168 /dev/stdin fd/0 symbolic stdin file descriptor
3169 /dev/stdout fd/1 symbolic stdout file descriptor
3170 /dev/stderr fd/2 symbolic stderr file descriptor
3171 /dev/nfsd socksys symbolic Required by iBCS-2
3172 /dev/X0R null symbolic Required by iBCS-2
3174 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3176 Recommended links
3178 It is recommended that these links exist on all systems:
3180 /dev/core /proc/kcore symbolic Backward compatibility
3181 /dev/ramdisk ram0 symbolic Backward compatibility
3182 /dev/ftape qft0 symbolic Backward compatibility
3183 /dev/bttv0 video0 symbolic Backward compatibility
3184 /dev/radio radio0 symbolic Backward compatibility
3185 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
3186 /dev/scd? sr? hard Alternate SCSI CD-ROM name
3188 Locally defined links
3190 The following links may be established locally to conform to the
3191 configuration of the system. This is merely a tabulation of existing
3192 practice, and does not constitute a recommendation. However, if they
3193 exist, they should have the following uses.
3195 /dev/mouse mouse port symbolic Current mouse device
3196 /dev/tape tape device symbolic Current tape device
3197 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
3198 /dev/cdwriter CD-writer symbolic Current CD-writer device
3199 /dev/scanner scanner symbolic Current scanner device
3200 /dev/modem modem port symbolic Current dialout device
3201 /dev/root root device symbolic Current root filesystem
3202 /dev/swap swap device symbolic Current swap device
3204 /dev/modem should not be used for a modem which supports dialin as
3205 well as dialout, as it tends to cause lock file problems. If it
3206 exists, /dev/modem should point to the appropriate primary TTY device
3207 (the use of the alternate callout devices is deprecated).
3209 For SCSI devices, /dev/tape and /dev/cdrom should point to the
3210 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3211 /dev/cdwriter and /dev/scanner should point to the appropriate generic
3212 SCSI devices (/dev/sg*).
3214 /dev/mouse may point to a primary serial TTY device, a hardware mouse
3215 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3217 Sockets and pipes
3219 Non-transient sockets and named pipes may exist in /dev. Common entries are:
3221 /dev/printer socket lpd local socket
3222 /dev/log socket syslog local socket
3223 /dev/gpmdata socket gpm mouse multiplexer
3225 Mount points
3227 The following names are reserved for mounting special filesystems
3228 under /dev. These special filesystems provide kernel interfaces that
3229 cannot be provided with standard device nodes.
3231 /dev/pts devpts PTY slave filesystem
3232 /dev/shm tmpfs POSIX shared memory maintenance access
3234 **** TERMINAL DEVICES
3236 Terminal, or TTY devices are a special class of character devices. A
3237 terminal device is any device that could act as a controlling terminal
3238 for a session; this includes virtual consoles, serial ports, and
3239 pseudoterminals (PTYs).
3241 All terminal devices share a common set of capabilities known as line
3242 disciplines; these include the common terminal line discipline as well
3243 as SLIP and PPP modes.
3245 All terminal devices are named similarly; this section explains the
3246 naming and use of the various types of TTYs. Note that the naming
3247 conventions include several historical warts; some of these are
3248 Linux-specific, some were inherited from other systems, and some
3249 reflect Linux outgrowing a borrowed convention.
3251 A hash mark (#) in a device name is used here to indicate a decimal
3252 number without leading zeroes.
3254 Virtual consoles and the console device
3256 Virtual consoles are full-screen terminal displays on the system video
3257 monitor. Virtual consoles are named /dev/tty#, with numbering
3258 starting at /dev/tty1; /dev/tty0 is the current virtual console.
3259 /dev/tty0 is the device that should be used to access the system video
3260 card on those architectures for which the frame buffer devices
3261 (/dev/fb*) are not applicable. Do not use /dev/console
3262 for this purpose.
3264 The console device, /dev/console, is the device to which system
3265 messages should be sent, and on which logins should be permitted in
3266 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3267 by the kernel; for previous versions it should be a symbolic link to
3268 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3269 a serial port primary (tty*, not cu*) device, depending on the
3270 configuration of the system.
3272 Serial ports
3274 Serial ports are RS-232 serial ports and any device which simulates
3275 one, either in hardware (such as internal modems) or in software (such
3276 as the ISDN driver.) Under Linux, each serial ports has two device
3277 names, the primary or callin device and the alternate or callout one.
3278 Each kind of device is indicated by a different letter. For any
3279 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3280 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3281 correspond to /dev/cua# and /dev/cub#. In the future, it should be
3282 expected that multiple letters will be used; all letters will be upper
3283 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3284 "cu" device (e.g. /dev/cudp#).
3286 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3288 The alternate devices provide for kernel-based exclusion and somewhat
3289 different defaults than the primary devices. Their main purpose is to
3290 allow the use of serial ports with programs with no inherent or broken
3291 support for serial ports. Their use is deprecated, and they may be
3292 removed from a future version of Linux.
3294 Arbitration of serial ports is provided by the use of lock files with
3295 the names /var/lock/LCK..ttyX#. The contents of the lock file should
3296 be the PID of the locking process as an ASCII number.
3298 It is common practice to install links such as /dev/modem
3299 which point to serial ports. In order to ensure proper locking in the
3300 presence of these links, it is recommended that software chase
3301 symlinks and lock all possible names; additionally, it is recommended
3302 that a lock file be installed with the corresponding alternate
3303 device. In order to avoid deadlocks, it is recommended that the locks
3304 are acquired in the following order, and released in the reverse:
3306 1. The symbolic link name, if any (/var/lock/LCK..modem)
3307 2. The "tty" name (/var/lock/LCK..ttyS2)
3308 3. The alternate device name (/var/lock/LCK..cua2)
3310 In the case of nested symbolic links, the lock files should be
3311 installed in the order the symlinks are resolved.
3313 Under no circumstances should an application hold a lock while waiting
3314 for another to be released. In addition, applications which attempt
3315 to create lock files for the corresponding alternate device names
3316 should take into account the possibility of being used on a non-serial
3317 port TTY, for which no alternate device would exist.
3319 Pseudoterminals (PTYs)
3321 Pseudoterminals, or PTYs, are used to create login sessions or provide
3322 other capabilities requiring a TTY line discipline (including SLIP or
3323 PPP capability) to arbitrary data-generation processes. Each PTY has
3324 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3325 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3326 allowing each master side to be opened only once.
3328 Once the master side has been opened, the corresponding slave device
3329 can be used in the same manner as any TTY device. The master and
3330 slave devices are connected by the kernel, generating the equivalent
3331 of a bidirectional pipe with TTY capabilities.
3333 Recent versions of the Linux kernels and GNU libc contain support for
3334 the System V/Unix98 naming scheme for PTYs, which assigns a common
3335 device, /dev/ptmx, to all the masters (opening it will automatically
3336 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3337 for the slaves; the slaves are named with decimal integers (/dev/pts/#
3338 in our notation). This removes the problem of exhausting the
3339 namespace and enables the kernel to automatically create the device
3340 nodes for the slaves on demand using the "devpts" filesystem.