1 Starting with 1.47, changes marked with SYSLINUX, PXELINUX, ISOLINUX
2 or EXTLINUX apply to that specific program only; other changes apply
6 * Support for NTFS, by Paulo Alcantara.
9 * HDT updated, and now supports uploading data to a TFTP
11 * ISOLINUX: remove the .img file support; it has been broken
12 on virtually all systems since the beginning, and has been
13 totally broken since 4.00 at least. Use MEMDISK instead.
14 * chain.c32: Support chaining ReactOS' FreeLdr (Shao Miller)
15 * isohybrid: -m option to add support for Mac EFI booting.
16 * ifmemdsk.c32: Choose boot option based on presence of
18 * Remove bogus distributed mk-lba-img binary.
19 * The Syslinux project has a new, cool logo by Abi
20 "ixxvil" Rasheed (doc/logo/*).
23 * PXELINUX: Fix handling of unqualified DNS names.
24 * PXELINUX: Fix timer bug when PXELINUX might be unloaded
26 * core/writedec.inc: Fix duplicate declaration and overflow
29 * sample directory: Fix Makefile include (Gene Cumm).
30 * ver.com: New universal DOS/COMBOOT application to display
31 version information (includes DRMK) (Gene Cumm).
32 * rosh.c32: updated; Using getopt() for internal commands to aid
33 parsing options; Fix bugs in ls; add warm reboot and echo
35 * com32: fix a file descriptor leak.
36 * gfxboot.c32: handle TEXT..ENDTEXT; error out on no LABELs
37 found (Sebastian Herbszt).
38 * Fix booting on non-partitioned devices.
39 * MBR, isohybrid: Workaround for a BIOS issue on Acer
40 Travelmate and possibly other machines.
41 * COM32: Adding ACPI parsing libary
42 * HDT: Release 0.4.1 to support ACPI parsing,
43 improved mutli-core/cpu reporting
44 * LUA: Updating to 5.1.4-2
45 * SYSLINUX: core/diskstart.inc: Reset DS after checksum in case
46 it isn't 0 (Gene Cumm).
47 * win64: Script update for additional mingw compiler names
49 * diag: New directory for diagnostic-related tools. Add a
50 handoff MBR/VBR and geometry display images (Gene Cumm).
51 * MEMDISK: use "mem=" parameter to mark available memory above
52 this point as reserved (core already does alignment) (Gene Cumm).
53 * MEMDISK: Additional disk probe checks and debug output
54 (Shao Miller, Gene Cumm).
55 * gpxe: add gpxelinuxk.0, based off of undionly.kpxe + new
57 * isohybrid: install the isohdpfx*.bin/isohdppx*.bin files to
58 make isohybrid images in one step with GNU xorriso.
59 * PXELINUX: disable a hack that would make localboot work on
60 some machines, but break just about as many. Some machines
61 which worked with "localboot 0" in previous versions may
62 need "localboot -1" in this one. If you have a machine
63 which requires "localboot -1", a copy of the dmidecode
64 or sysdump output would be appreciated.
65 * Include a set of diagnostics by Gene Cumm.
66 * Fixes for gcc 4.6 and binutils 2.21.51.
67 * chain.c32: Allow "uuid" as a synonym to "guid".
68 * Handle directory names starting with .. for vfat and
70 * New MENU HIDDENKEY command to provide a one-keystroke way to
71 activate a boot option from a hidden menu intro screen.
74 * Don't hang if no configuration file is found.
75 * Better support for booting from MBRs which don't pass
77 * EXTLINUX: Try to be smarter about finding the partition
79 * chain.c32: support chainloading Dell Real Mode Kernel (Gene
81 * chain.c32: fix booting in CHS mode.
82 * rosh.c32 updated (Gene Cumm).
83 * Fix the -s option to the syslinux/extlinux installer (Arwin
85 * isohybrid: fix padding of large images (PJ Pandit).
88 * SYSLINUX: correctly handle the case where the -d option is
89 specified with a non-absolute path, i.e. "syslinux -d
90 syslinux" instead of "syslinux -d /syslinux".
91 * ISOLINUX: recognize the directory names /boot/syslinux and
92 /syslinux, and the filename syslinux.cfg in addition to the
93 isolinux-specific names. Thus, "syslinux.cfg" is now a
94 generic name, whereas "isolinux.cfg" or "extlinux.conf" is
95 specific to different derivative.
96 * chain.c32: support setting alternate config filename for
97 stage2 of GRUB Legacy (Gert Hulselmans).
98 * whichsys.c32: execute specific command, based on Syslinux
99 bootloader variant (Gert Hulselmans).
100 * lua.c32: a lot of new bindings added to the "syslinux"
101 namespace: VESA, PCI, DMI, kernel loading (Marcel Ritter).
102 * btrfs: print a comprehensive error message if compressed or
103 encrypted files are encountered (neither is currently
105 * SYSLINUX: mtools installer: honor TMPDIR, error out on disk
107 * Handle fallbacks from EDD to CHS, to deal with systems which
108 announce EDD support but don't actually have it.
109 * SYSLINUX: the mtools, DOS and win32 installers now use the new
110 command line options.
111 * PXELINUX: fix the use of IP addresses in TFTP :: or tftp://
113 * SYSLINUX: experimental Win64 installer (syslinux64.exe).
116 * ISOLINUX: fix initialization on systems which don't zero
118 * SYSLINUX/EXTLINUX: fix handing of disk read retries in
120 * ISOLINUX: change the initialization sequence to avoid
121 problems with certain (old) BIOSes. Special thanks to
122 Helmut Hullen for invaluable debugging support.
123 * ifplop.c32: new module which detects if the PLoP Boot Loader
124 already has booted a CDROM or USB drive (Gert Hulselmans).
125 * Correct a severe memory overwrite bug, triggered primarily
126 when selecting a very long command line in the menu system.
127 * lua.c32: Lua script interpreter, currently experimental
128 (Alexey Zaytsev, Marcel Ritter, Geert Stappers).
129 * PXELINUX: new option IPAPPEND 4 to append the system UUID to
130 the kernel command line.
131 * PXELINUX: display BOOTIF and SYSUUID at startup time, and
132 when Ctrl-N is pressed on the command line.
135 * Major code base changes; all filesystem rewritten in C.
136 This work was done primarily by Liu Aleaxander (Yuanhan Liu).
137 * EXTLINUX: btrfs and ext4 support. btrfs support was done by
139 * EXTLINUX is no longer a separate derivative; extlinux and
140 syslinux both install the same loader (ldlinux.sys); for the
141 Linux-based installers the extlinux binary is used for a
142 mounted filesystem; the syslinux binary for an unmounted
144 * When loading a new configuration file with the CONFIG
145 command, one can now also specify a new current directory
146 with an APPEND statement.
147 * Full ADV support for Syslinux, to boot-once and MENU SAVE
149 * Full support of GPT-partitioned disks, including disks
150 and/or parititions larger than 2 TiB (if supported by BIOS.)
151 * The GPT handover protocol adjusted to the current T13
152 committee draft; see doc/gpt.txt.
153 * HDT: code cleanup, small bugfixes
154 * The "linux" syslinux installer (syslinux-nomtools) now has a
155 command-line syntax closer to the extlinux installer. The
156 mtools, dos and win32 installers will get this new syntax
157 eventually, but it is not implemented yet.
158 * chain.c32: support booting GPT partitions by index, GUID, label.
159 * chain.c32: support booting the Syslinux partition with "fs".
160 * chain.c32: implement gpt.txt hand-over protocol.
161 * chain.c32: support for chainloading Grub stage 2.
162 * PXELINUX: TFTP URL syntax (tftp://) supported even when not
163 running gPXE/gpxelinux.
164 * New ls.c32 module to display the contents of the disk from
165 the command line, and pwd.c32 to display the current
167 * rosh.c32 (read only shell) updated and hopefully usable.
168 * PXELINUX: Support "localboot -1", just like the other
170 * gfxboot.com removed in favor of gfxboot.c32.
171 * New MENU HELP statement to display fullscreen help text as a
172 result of a menu selection.
173 * memdiskfind utility that can be used with the phram driver
174 in the Linux kernel to mount a memdisk.
175 * ifcpu.c32: Adding usage when no parameters are given,
177 * ifcpu.c32, ifcpu64.c32: handle more than one argument per
179 * isohybrid: C version which does not require Perl.
180 * New command MENU IMMEDIATE to permit hotkeys to activate
181 immediately without needing Enter.
182 * mdiskchk.com supports a --no-sequential (or -n) option to
183 suppress the classic all-drive-probing heuristic. Useful
184 on BIOSes who crash/hang when certain drive numbers are
186 * ElTorito.Sys DOS driver now scans drive numbers upwards
187 instead of downwards, in order to avoid a fairly common
188 bug on some BIOSes where probing drive 0xFF causes a
190 * NASM 2.03 or later required to build. 2.07 or later
194 * chain.c32: fix chainloading the MBR of a hard disk (broken
196 * mboot.c32: report the boot loader name in the information
198 * com32: set argv[0] in a com32 module.
199 * core: add a workaround for a bug in Xen HVM older than
200 version 3.3: disable halt on those platforms.
201 * Fix problems where certain operations in com32 modules would
202 cause the core to believe the system was idle.
203 * MEMDISK: fix MBR detection when used with a DOSEMU header or
205 * MEMDISK: generate the mBFT checksum correctly.
208 * gPXELINUX: updated to gPXE 1.0.0. gPXELINUX can now do NBP
209 chainloading, and does not require a second DHCP.
210 * vesamenu.c32: unbreak the default "grey hole" background.
211 * We no longer have a built-in default of "linux auto".
212 Instead, if no DEFAULT or UI statement is found, or the
213 configuration file is missing entirely, we drop to the boot:
214 prompt with an error message (if NOESCAPE is set, we stop
215 with a "boot failed" message; this is also the case for
216 PXELINUX if the configuration file is not found.)
217 * chain.c32: support chainloading Grub4DOS; patch by Gert
219 * New tool: sysdump.c32, can be used to produce system
220 information for debugging via tftp or ymodem (serial port).
221 * "vga=current" on the Linux command line is now supported.
222 * chain.c32: support for Windows Recovery Console, via the
224 * chain.c32: should now support loading NTLDR from different
225 type media than loaded from.
226 * chain.c32: support chainloading to a FAT/NTFS partition with
227 invalid "hidden sectors" via the "sethidden" option.
228 * memdisk: fix the mBFT ACPI table.
229 * vesamenu.c32: if the image is smaller than the screen, tile
230 it across the whole screen.
231 * mkdiskimage: -s option for producing a sparse image.
232 * vesamenu.c32: support arbitrary resolution setting (beyond
233 BIOS support) on some Intel-based video chipsets. This code
234 is a modified version of the "915resolution" tool by
235 Steve Tomljenovic; your mileage might vary.
238 * SYSLINUX: make the DOS installer work for MS-DOS 7.x/8.x
240 * HDT: updated to version 0.3.6 (numerous changes.)
241 * mboot.c32: now supports video mode setting if requested by
243 * MEMDISK: Fix floppy images of PC-DOS.
244 * MEMDISK: Add support for emulation of CD-ROM images; patch
246 * MEMDISK: Comply with the Win9x "safe hook" standard,
247 allowing a protected-mode driver.
248 * MEMDISK: New "mBFT" ACPI table, by analogy with the iSCSI
249 iBFT table. This allows detection from a protected-mode
250 operating system without EDD support.
251 * 32-bit version of the gfxboot loader (gfxboot.c32), so far
252 experimental. This will replace gfxboot.com in the future.
253 * vesamenu.c32: new MENU RESOLUTION directive to set a screen
254 resolution other than 640x480.
255 * chain.c32: add support for loading isolinux.bin.
256 * chain.c32: make sure to always return to text mode.
257 * eltorito.sys: DOS driver for generic CD-ROMs; by Gary Tong
261 * PXELINUX: clear memory before handing over to a chainloaded
262 NBP. This may help avoid a bug in Windows RIS.
263 * PXELINUX: fix localboot after NBP chainloading on certain
264 BIOSes (including ASUS A8N-E, but possibly others.)
265 * chain.c32: support chainloaded bootloaders on ISOLINUX.
266 * PXELINUX: allow filenames up to 251 characters.
267 * MEMDISK: fix problems booting from USB on Thinkpads, and
268 possibly other machines or hardware combinations.
269 * isohybrid: fix the -id option.
270 * HDT: updated to version 0.3.4.
271 * MEMDISK: the stack size is now configurable, with the stack=
273 * Simple menu: fix Ctrl-W (word erase) in command-line edit.
274 * Simple menu: fix crash on some platforms.
275 * Gfxboot: fixes to the configuration file parsing.
276 * PXELINUX: add a tool to override specific DHCP options via
277 values hardcoded in the pxelinux.0 file. These hardcoded
278 values can be either "before DHCP" (defaults if DHCP do not
279 provide values), or "after DHCP" (overrides DHCP). The tool
280 pxelinux-options can be used to set these options. This
281 feature does not apply to gpxelinux.0; when used with gPXE
282 this is better handled by modifying the embedded script.
285 * isohybrid: fix the -partok logic for loading from a partition.
286 * ISOLINUX: deal with systems which return from INT 13h with
288 * Do not invoke the idle handler during large file loads.
289 * Simple menu: make ONTIMEOUT work with MENU HIDDEN.
290 * PXELINUX: handle TFTP servers which have extra NULs at the
291 end of an OACK packet.
294 * Shuffler: fix bug in real-mode entry. This affected a
295 number of modules, probably in relatively unimportant ways,
296 but it completely broke linux.c32.
297 * Improved performance.
298 * Attempt to halt the processor while idle. This can cause
299 bad reponsiveness when using a serial console especially for
300 automated input; if that ends up being a problem, use the
301 new "NOHALT 1" configuration command.
302 * linux.c32 now suppresses all messages if the "quiet" flag is
304 * isohybrid: add a variety of options, and a help message.
305 * ISOLINUX: fix booting in hybrid mode when CBIOS is used.
306 This unfortunately means that the isohybrid handoff protocol
307 has changed, so the isohybrid utility must version-match
309 * Drop support for ACPI 3 extended memory flags.
310 * Menu system: don't set the autocr flag on the serial
312 * altmbr: fix handling of logical partitions.
313 * altmbr: cap at 439 bytes so the partition select byte isn't
317 * New shuffler mechanism and API.
318 * Rewritten mboot.c32 module.
319 * The syslinux_boot_linux() function has been simplified.
320 * Don't hang trying to boot a "menu quit" label from the CLI.
321 * Fix problem with boot-once "sticking" on some BIOSes.
322 * isohybrid: fix problem with images over 2 GB in size.
323 * APM poweroff module (poweroff.com) by Sebastian Herbszt.
324 * ISOLINUX: fix the handling of large directories. Bug found
325 and fixed by Steffen Winterfeldt.
328 * PXELINUX: fix the "keeppxe" option, which was broken in
330 * MEMDISK: correct the extraction of geometry information from
331 the MBR of a hard disk image, again broken in 3.74.
332 * extlinux(1) man page from Brian Pellin.
333 * Simple menu: MENU SAVE is now controllable on a menu-by-menu
334 or entry-by-entry basis.
335 * gPXELINUX: fix interrupt-disabling bug.
336 * HDT: fix lockup on machines with certain PCI configurations.
339 * New UI directive, which allows a more natural way to specify
340 a menu system (or not.) With the UI directive specifying
341 the menu system, the DEFAULT directive can be used to select
342 the default entry inside the menus.
343 * kbdmap.c32: new module to load a new keyboard map
345 * isohybrid: workaround bug in some versions of binutils.
346 * Fix issue with the placement of the initrd on some machines.
347 * ifcpu64: fix handling of less than three arguments.
348 * Fix bug in the shuffle library when dealing with a very
349 large number of fragments.
350 * Documentation fixes by Vicente Jimenez Aguilar.
351 * gPXE updated to version 0.9.7.
352 * hdt.c32: Hardware Detection Tool, an interactive hardware
353 analyzer module by Erwan Velu.
354 * MEMDISK: enable automatic determination of the disk geometry
355 for a large floppy disk image if (and only if) it is
356 formatted with a FAT filesystem.
357 * SYSLINUX: fix the handling of .bss files on FAT12/16.
358 * Suppress the Loading ... message if "quiet" is specified on
359 the kernel command line.
360 * Fix the use of "CONSOLE 0" with menu.c32.
361 * Allow COM32 modules to be aware of all memory even in the
362 presence of a memory hole. The "linux.c32" module can be
363 used to load a kernel (or memdisk) plus large initrd on
365 * MBR: produce alternate MBR variants which force the drive
366 number to hd0 (_f variants), or force the drive number to
367 hd0 if the Ctrl key is pressed (_c variants.) Furthermore,
368 add an MBR variant (altmbr*.bin) which ignores the active
369 flag and instead boots the partition number specified in the
370 byte at offset 439 decimal.
371 * Add IPAPPEND strings to com32 modules, especially needed for
373 * New MENU SAVE directive which saves the latest menu
374 selection until the next boot. Currently only implemented for
376 * gfxboot.com: *experimental* interface module to Steffen
377 Winterfeldt's "gfxboot" graphical front end
378 (http://gfxboot.sourceforge.net/). Module by Sebastian Herbszt.
381 * Upgrade gPXE to release version 0.9.5.
382 * Fix a number of build errors on various platforms.
383 * Handle systems with E820 "extended attributes" per ACPI 3.
384 Someone "cleverly" decided to change the E820 spec in a
385 backwards-incompatible manner!
386 * MEMDISK: default to "safeint".
387 * Adopt the moniker "The Syslinux Project", standard proper
388 noun capitalization, to refer to the project as a whole.
389 Thus, reserve the all-caps "SYSLINUX" to refer to the FAT
391 * mboot.c32: add "-solaris" option to pass DHCP information to
392 the Solaris kernel; required for automatic Solaris boot
393 without using Solaris' pxeboot program.
394 * config.c32: trivial COM32 module to restart Syslinux with
395 another configuration file from the command line (equivalent
396 to the CONFIG command in the configuratin file.)
399 * Include the pxechain.com module from Jeffery Hutzelman at
400 Carnegie Mellon University. This allows chaining another
401 PXE boot program while changing the DHCP packet passed to
403 * Reorganize the Makefile system.
404 * Major PCI core cleanups and other source cleanup.
406 * Try to avoid memory-snooping attacks on passwords. Note
407 that if someone has root on the box, they generally don't
408 need to compromise the boot loader...
409 * ISOLINUX: fix crash when given a zero-length file.
410 * sdi.c32: support gzipped SDI images.
411 * ISOLINUX: support generating images which can be either
412 a CD-ROM or a hard disk (USB disk, etc.) See
413 doc/isolinux.txt for more information.
414 * Remote gdb support for COM32 modules; patch from Stefan
416 * Support beeps in F-key help in the simple menu system.
417 * Tab display of labels, based on a patch from Sebastian
418 Herbszt. Can be disabled with the NOCOMPLETE configuration
420 * "menu default" can now be specified after "menu begin", to
421 indicate that a specific submenu should be the default entry.
424 * Workaround for a VESA BIOS which tries to make DOS system
426 * Simple menu: fix navigation around disabled entries
427 (or at least try to...)
428 * EXTLINUX: proper error message when confused about mount
430 * MEMDISK: be smarter about incompletely disabled floppies in
431 the BIOS and about being the only floppy.
432 * Optionally allow initrd to be specified on a separate line
433 rather than as part of the "append" line. This is not
434 recommended, but apparently makes life easier for some
436 * SYSLINUX: if no config file is present, set the current
437 directory to the root directory (Sebastian Herbszt).
438 * chain.c32: option "hide" to support hiding and unhiding of
439 primary partitions on the boot drive with DOS, Win, or OS/2
440 partition types (01, 04, 06, 07, 0b, 0c, 0e).
441 * Unbreak the KBDMAP command (broken in 3.70).
442 * EXTLINUX: fix the handling of the ADV when using CBIOS.
443 * ifcpu64.c32: simple COM32 module to select a 32- or 64-bit
444 kernel (and optionally 32-bit kernels with or without PAE.)
445 Eventually we want a scripting language for this
446 kind of stuff; a Lua module is under development.
447 * Fix parsing of the SERIAL command without a baud rate
449 * chain.c32: error out when try to boot an unbootable
451 * SYSLINUX: when building the Win32 installer, search for
452 MinGW under a large number of possible names.
455 * PXELINUX: Support enhanced capabilities when running on top
456 of gPXE (http://www.etherboot.org/). In particular, support
457 URL-style syntax for filenames, and any protocol that gPXE
458 supports (except, currently, iSCSI and AoE.) This feature
459 is currently highly experimental.
460 * Substantial infrastructure changes to support files whose
461 length aren't known at open time (typically network
462 connections.) Please note that the semantics of some of the
463 comboot APIs have changed slightly; please see doc/comboot.txt.
464 * PXELINUX: We no longer require a TFTP server which supports
465 the tsize option for all transfers.
466 * PXELINUX: Integrate with the gPXE source base; unified image
467 now included as "gpxelinux.0".
468 * The source tree has been restructured; files that were
469 previously in the root have moved into the core, dos, gpxe,
470 and utils directories.
471 * "make install", "make netinstall", and "make extbootinstall"
472 have been updated massively. "make install-all" now installs
474 * Change default dir for auxiliary files from
475 /usr/lib/syslinux to /usr/share/syslinux.
476 * SYSLINUX: VFAT long filename support.
477 * MEMDISK: Any image less than 4096K (4 MB) is treated as a
478 floppy disk. The geometry-guessing code will recognize all
479 common extended formats, but it is still possible some very
480 exotic formats need geometry specification. Large floppies
481 and very small harddisks still need explicit specification.
482 * chain.c32: option "swap" to support swapping of BIOS drive
483 numbers. This is necessary to boot certain operating systems
484 (DOS, Windows) from a secondary drive.
485 * chain.c32: option "file=" to support loading a boot file from
486 the SYSLINUX filesystem instead of loading the boot sector
488 * chain.c32: option "seg=" to control the load location.
489 * chain.c32: option "ntldr=" as a shorthand for "seg=0x2000
490 file="; use this to load one of WinNT's loaders:
492 chain.c32 hd0 1 ntldr=/MiniNT/setupldr.bin
494 Note that the file needs to be in the SYSLINUX filesystem.
495 * chain.32: options "freedos=" and "msdos="/"pcdos=" as
496 shorthands for "seg=0x60 file=" and "seg=0x70 file="
497 respectively; use this to load FreeDOS's kernel.sys, MS-DOS's
498 io.sys or PC-DOS's ibmbio.sys.
499 * Change to the A20 algorithm which *MIGHT* help systems that
500 have systems which freeze when Syslinux is used with USB
501 keyboards. Note that this has been hard do verify, so I
502 would greatly appreciate feedback on it.
503 * Complex menu system: unbreak menus which has unnamed
504 submenus, like complex.c.
505 * Fix newline on the serial port for some com32 modules.
506 * chain.c32: support "boot" as the drive specification,
507 indicating the drive from which it was booted
508 (for syslinux/extlinux).
509 * SYSLINUX/EXTLINUX: support "localboot" with the same feature
511 * Add an experimental MBR for GPT partition tables.
512 * Use $(CC) when determining compile flags.
513 * chain.c32: fix booting from logical partitions (Sergey
517 * Fix errors in the PCI and DMI detection modules (Erwan Velu,
519 * Fix host dependencies and other issues in the build system.
520 * PXELINUX: Allow class E addresses as unicast.
521 * sdi.c32: module to load Microsoft System Deployment Images.
522 For additional information, please see:
523 http://msdn2.microsoft.com/en-us/library/ms838543.aspx
524 * EXTLINUX: Correct reading directories with deleted entries.
525 * Shuffle library: correct the handling of certain geometries
526 (an upward move with source material blocking the move); as
527 required by sdi.c32 but theoretically possible for other
529 * Add "make netinstall" to install /tftpboot.
530 * Fix some documentation files that didn't get moved/renamed.
533 * Clean up garbage after "aborted." message.
534 * Clean up memdump.com filenames.
535 * Support SHA256 and SHA512 encrypted passwords.
536 * The shuffle library now can generate chained descriptors,
537 thus allowing pretty much arbitrarily complex memory maps.
538 * Handle command lines up to 2047 characters, the current
540 * vesamenu: support systems without linear framebuffer support
541 (sigh, what is this, 1993?) and 15-bit RGB modes.
542 * Move the label storage (for the command-line interface) to
543 high memory, removing the size limit and freeing up 64K of
545 * Get rid of 4096-entry limit in the simple menu system.
546 * New hierarchial submenu support: see MENU BEGIN, MENU END,
547 MENU GOTO in doc/menu.txt.
548 * MENU QUIT allows creating a menu entry for returning to the
550 * ISOLINUX: Work around bug in certain Adaptec BIOSes,
551 patch by Bruce Robson.
552 * pngtopnm dependency removed from samples/ directory.
553 * Text documentation files (in doc/) renamed *.doc -> *.txt.
556 * EXTLINUX: fix crash when accessing an empty file.
557 * elf.c32: If a PHDR segment is present, load it.
558 * Fix SHA-1 and MD5 passwords.
559 * ISOLINUX: fix booting when mastered without
560 mkisofs -boot-info-table (broken since 3.50, sigh...)
561 * Handle BIOSes which emit multiple contiguous valid
562 memory regions in the e820 map.
565 * Support for "auxilliary data vector", a small amount of
566 writable storage. Currently only supported for EXTLINUX,
567 but the infrastructure is there for the other derivatives,
568 assuming a suitable storage location can be found.
569 * EXTLINUX: boot-once support (--once, --clear-once, and
571 * A command is now required to the EXTLINUX installer, i.e. at
572 least one of --install, --update, --once, --clear-once, or
576 * PXELINUX: as per RFC 5071, PXELINUX no longer requires the
577 use of the magic cookie option (208) for unencapsulated
578 options. Currently it does not require it for
579 vendor-encapsulated options (vendor-option-space) either,
580 but that MAY be reverted in the future if it causes
582 * Documentation text files moved to a common "doc" directory;
583 man pages from the Debian project added to the "man"
585 * Correct bug with self-overlapping memory areas when using
586 the shuffle interface.
589 * Add "menu separator", "menu indent", "menu disabled"
591 * vesamenu: fix handing of VESA modes with noncontiguous
592 memory buffers. In particular, Qemu/KVM sets up such a mode
593 when Cirrus Logic emulation is enabled (which is the
595 * Support for calling real mode functions using far calls,
596 with argument on the stack. This was implemented to support
597 the BIOS BBS specification, but subsequent experiments show
598 that the at least one of the most common BIOS cores, Award,
599 passes the presence check but doesn't actually implement the
603 * Fix bugs related to the $PnP BIOS functionality on some
605 * PXELINUX: Fix the "naked" version of :: (suppress prefix.)
606 * elf.c32: better error messages.
607 * Faster operation under Intel VT virtualization.
608 * PXELINUX: Fix DHCP bootfile option.
609 * mkdiskimage: Support more than 1024 cylinders.
610 * (Hopefully) fix installer on non-x86 platforms.
611 * Fix shuffle_and_boot_rm, used by linux.c32.
612 * Fix shuffle_and_boot_pm on 386/486.
613 * ISOLINUX (at least): fix bss memory overwrite hang.
614 * MBR: Fix booting from logical partitions.
618 * Handle capitalized F-key commands in the menu system.
619 * Fix padding error when loading multiple ramdisks.
620 * Workaround for VMware crashing when trying to print a
621 message during early kernel boot (does not seem to work,
623 * chain.c32: add the ability to search for a specific MBR
624 signature at runtime.
625 * Fall back to the server identity option if the siaddr field
626 in the DHCP header isn't set. This seems to match the
627 behaviour of most PXE stacks.
628 * mkdiskimage: give the generated disk image an MBR signature.
629 * MEMDISK: Fix failures on some BIOSes.
630 * Simple menu system: new "MENU HIDDEN" option to not display
631 the menu unless the user presses a key.
632 * Simple menu system: support MD5-encrypted passwords (modern
633 Unix standard style, with "$1$" prefixes.)
634 * pcitest.c32: now functions as a full "lspci". Thanks to
635 Erwan Velu for this work.
636 * MEMDISK: Make EDD actually work.
637 * ISOLINUX: Fix for certain broken CD-ROM BIOSes which
638 randomly corrupted register FS.
639 * Simple menu system: fix memory overwrite bug that caused
640 some systems to lock up or behave weirdly.
641 * Fix building on 64-bit systems without a 32-bit libc installed.
644 * EXTLINUX: Fix failure to find the configuration file.
647 * New keywords allow the type of file to be specified in the
649 * It is now supported to load a different configuration file
650 with the CONFIG keyword.
651 * Fix API call 0x0019 (Read Disk.)
652 * MENU AUTOBOOT, MENU TABMSG, MENU PASSPROMPT allows
653 internationalization of menu messages.
654 * A new feature, TEXT HELP, allows the administrator to set
655 a multi-line help message for individual selections.
656 * Fix API call 0x0012 (Cleanup, shuffle and boot.)
657 * New API call "Cleanup, shuffle and boot to flat protected mode"
658 * New API call "Cleanup, shuffle and boot to real mode",
659 similar to API call 0x0012 but allows arbitrary register setting.
660 * Introduce a library interface for loading arbitrary binary
661 formats with relatively easily understood code. See
662 the elf.c32 module for an example on how to use it.
663 * New module "elf.c32", to load a protected-mode ELF kernel.
664 * MBR (old and new): Fix bug in CHS mode when LBA >
666 * vesamenu: fix decoding of palettized PNG images.
667 * Update the Linux kernel boot protocol.
668 * PXELINUX: Press Ctrl-N at the boot prompt to read out the
670 * Instead of the (non-existent) MAC, use the client identifier
671 for networks like Infiniband and Firewire/1394.
672 * Add a new INCLUDE command to the core syslinux parser.
673 * Allow binding help text to F11 and F12.
674 * F-key help now available in the simple menu system.
675 * Disabled the polling for ARP during idle. It is simply too
676 slow on some (broken!) PXE stacks.
677 * PXELINUX: also try to fetch the config file based on UUID.
678 * SYSLINUX/EXTLINUX: New RAID mode (-r) which calls the BIOS
679 to load the next device (typically the next drive) on boot
683 * MEMDISK: Disable EDD by default on floppy disks. EDD can be
684 enabled with the "edd" option and disabled with "noedd".
685 This (hopefully) should make Ghost work again.
686 * SYSLINUX: "unix" installer now uses Linux ioctls instead of
688 * New MBR which can boot from logical partitions.
689 * SYSLINUX: Fix bug in detecting special extensions which was
690 introduced in 3.35 :(
691 * PXELINUX: Unbreak chainbooting FreeBSD (and possibly others.)
694 * MEMDISK: New "safeint" mode.
695 * MEMDISK: Be more compliant with the PnP BIOS spec.
696 * MEMDISK: Turn on EDD support by default.
697 * MEMDISK: Try to work on some machines on which it would not
698 work when there was no floppy drive in the system.
699 * Simple menu system: fix serial console support (broken in
701 * SYSLINUX: Support subdirectories. Like ISOLINUX, the
702 "current directory" is the directory in which syslinux.cfg
703 is found; this is searched for in the sequence
704 /boot/syslinux, /syslinux, /. As a side benefit, label names
705 like "linux-2.6.18" and "linux-2.6.19" are now supported.
707 To install ldlinux.sys in a subdirectory, pass the -d
708 directory option to the SYSLINUX installer.
710 This work was sponsored by slax.org (thanks, Tomas!)
711 * New API call: read disk.
712 * Invoke ONERROR on initrd load failure.
715 * The simple menu system (menu.c32 and vesamenu.c32) now
716 support loading more than one configuration file at a time,
717 using MENU INCLUDE or by specifying multiple filenames.
718 * The MENU COLOR statement can now control the shadowing mode.
721 * libcom32 extended to support graphics mode and graphical console.
722 * vesamenu.c32, new graphical version of the Simple
723 Menu System, see README.menu.
724 * New com32 modules by Erwan Velu do selection based on CPUID
725 or PCI devices present.
726 * RPM spec: add syslinux-tftpboot module; move syslinux by
727 default to the /usr/share/syslinux directory.
728 * RPM spec: extlinux is now a separate package.
731 * EXTLINUX: New options --install (-i) and --update (-U), to
732 make it clear if a boot loader should be installed or
733 updated. For now, defaults to --install for compatibility;
734 a future version will require one of these options.
735 * New library functions to load and place files in memory.
736 * mboot.c32 bug fixes.
737 * Remove 8 MB kernel size restriction.
738 * Add "klibc" target for building unix/syslinux and
739 extlinux/extlinux with klcc (klibc-1.4.27 or later.)
740 * PXELINUX: Fail (and eventually reboot) if no configuration
742 * COM32 module by Erwan Velu to make decisions based on DMI
744 * Fix issue where going back and forth between menus a lot
746 * ISOLINUX: Fix bug which made "cd boot sectors" not work.
749 * MEMDISK: Fix bug by which accessing the real floppy disk
750 as B: in MS-DOS was broken.
751 * Simple menu system: allow tweaking of the screen layout.
752 * Simple menu system: better command-line editing, correctly
753 handle command lines above 256 characters.
754 * PXELINUX: revert memory allocation change that caused
755 problems on some network cards.
756 * MEMDISK: Try work around a bug on some BIOSes when no
757 physical floppy disk is present in the system.
758 * Enable the 16550A FIFOs, if present, when doing serial
760 * New "totaltimeout" command establishes a timeout without
761 regard for any user input.
762 * Simple menu system: timeout behaviour now more in line with
764 * Simple menu system: "ontimeout" should now work correctly.
767 * gcc 4.0.1 compilation fixes.
768 * Add support for querying the PCI BIOS in libcom32
769 (used by ethersel et al.)
770 * Fix PCI handing (ethersel etc) on several old chipsets (and
772 * Try to deal with systems with broken EBIOS.
773 * New API call to do "localboot".
774 * New API call to query features.
775 * New API call to run kernel image, a lower-level call than
776 "run command". See comboot.doc.
777 * Fix for bug in EBIOS code discovered by Arwin Vosselman.
778 * NOESCAPE security fix.
779 * Comments are now recognized even without a space following #.
780 * Fix incorrect handling of mixes of entries with and without
782 * The idle API call now harmlessly returns failure if it is a
783 no-op. That way the caller can decide whether or not to
784 bother invoking it again.
785 * Temporarily disable the idle API call on PXELINUX, due to
786 some platforms on which the idle API call seems to hang; this
787 problem has not yet been debugged.
788 * MEMDISK: the handling of DOSEMU-headered images was broken;
790 * EXTLINUX: symlinks are now supported.
791 * Simple menu system: N and P now work correctly as hotkeys.
792 * MEMDISK: more BIOS bug workarounds.
795 * gcc4 compilation fix.
796 * <BEL> (Ctrl-G) in message files now causes a beep.
797 * Reduce the command line to 511 characters; 1023 caused
801 * SYSLINUX: Fix performance regression (-s mode always
803 * Add API function for idle loop.
804 * libutil: Add do_idle() function for idle loop, make
806 * libutil: Add SHA-1 and base64 functions.
807 * Simple menu system: add password support.
808 * EXTLINUX: Sparse files now handled correctly.
809 * EXTLINUX: Large directories now handled correctly.
810 * ALL: At the prompt, Ctrl-X now forces text mode.
811 * Fix configuration file parsing error, that could cause
813 * Rewritten advanced menuing system from Murali Ganapathy.
814 * MEMDISK: New "bigraw" mode to work around certain broken
816 * COM32 module to boot Multiboot systems, including Xen. See
817 com32/modules/mboot.doc.
818 * Max command line changed to 1023 characters. Note that the
819 kernel proper still can only handle 255 characters without
820 patching, and COM16 binaries can only handle 125 characters.
823 * Fix chainloading (chain.c32).
824 * Fix zlib build problem.
825 * Use a private copy of <linux/ext2_fs.h>.
828 * Fix typo that caused the ramdisk to load in the wrong place.
831 * New API function "shuffle and boot"; allows COM32 modules to
832 load or construct (almost) arbitrarily complex objects,
833 e.g. a kernel and its initrd/initramfs in pieces, and have
834 the API core reorganize memory for booting. (A library API
835 for this function will be introduced in a later version.)
836 * The initrd= option now supports multiple filenames separated
837 by commas. This is mostly useful for initramfs, which can
838 be composed of multiple separate cpio or cpio.gz archives.
839 (Note: all files except the last one are zero-padded to a 4K
840 page boundary. This should not affect initramfs.)
841 * EXTLINUX: Fix API function 000Ah (get derivative-specific
843 * libcom32/ethersel: Support PCI Config Mechanism #2 on
844 machines still infested with that hideous old hack.
845 * SYSLINUX: Fix directory-parsing bug.
848 * SYSLINUX: The "unix" installer now sets the MS-DOS
849 attributes (hidden, system, readonly.)
850 * COM32 library: build the .lnx (test modules for running
851 under Linux) as architecture native modules, in case
852 i386 devel libraries aren't installed.
853 * EXTLINUX: Hack for systems which don't have BLKGETSIZE64
854 defined in the standard header files.
855 * Simple menu system: minor aestetic improvements, and try to
856 work better over a serial console (speed, and readability on
857 monochrome terminal emulators.)
858 * New CONSOLE directive to control output on the video console
859 (useful for dealing with some broken serial-forwarding
861 * New com32 module "ethersel" for searching for an Ethernet
862 card and selecting the proper version of Etherboot.
863 * EXTLINUX: Allow the user to override the detected geometry.
867 * EXTLINUX, SYSLINUX: Fix compile errors on some systems.
868 * EXTLINUX: Default to zipdrive geometry (64 heads, 32
869 sectors) if no other geometry can be detected.
872 * SYSLINUX: Support FAT32 and EDD. As an unfortunate
873 consequence, LDLINUX.SYS is no longer an ordinary file; it
874 is block-mapped at install time, which means it can only be
875 written using the syslinux installers.
876 * SYSLINUX: Reorganize the source code for the installers;
877 each one of the installers (dos, win32, unix, mtools) is now
878 built in its own subdirectory. In particular, "mtools" is
879 the unprivileged installer which uses mtools; "unix" is the
880 privileged installer which uses system calls.
881 * SYSLINUX: Completely rewritten DOS installer in C.
882 * ALL: "label" statement information is now stored in a
883 compressed format, which means that a lot more labels are
884 permitted (500-1000 in a typical configuration, but depends
886 * EXTLINUX: New derivative, which boots from an ext2/ext3
888 * SYSLINUX: The DOS and Win32 installers can now optionally
889 write the boot sector to a file instead of the real boot
890 sector. This is not supported in the Linux installers,
892 * ALL: New NOESCAPE command, disables the "hold down the Shift
893 key to display the prompt" behaviour.
894 * New simple menu system, as an alternative to the advanced
895 menu system already present. See README.menu for details.
896 * PXELINUX: Filenames can now be prefixed with an IP address
897 or DNS name plus :: (e.g. 192.0.2.1::filename or
898 server.domain.com::filename), which downloads a file from an
899 alternate TFTP server, or just a :: (e.g. ::filename), which
900 suppresses the common pathname prefix. See pxelinux.doc.
901 * SYSLINUX: Add an -m option to the DOS and Win32 installers
902 to write an MBR and -a to mark the partition SYSLINUX is
903 being installed on active.
904 * MEMDISK: Give a way to query the boot loader type while
905 running MEMDISK; see memdisk/memdisk.doc and
907 * mkdiskimage: substantially improved mkdiskimage which, among
908 other things, can now be used to initialize USB keys as
909 zipdrives; see README.usbkey for more information.
912 * MEMDISK: Fix command-line parsing "brown paper bag" class
914 * MEMDISK: Add "raw" mode to support the DOS boot disk from
915 WinME/XP, which seems to deliberately crash the system
916 when someone uses the "INT 15h mover" highmem API.
917 * Make "make install" do something sane for the com32
918 development environment.
919 * In the spec file, create a separate -devel RPM for the com32
920 development environment.
923 * Simple C library, based on klibc, for writing COM32
925 * Fix the handling of file length in loading of COM32
927 * MEMDISK: Work around a linker bug by rearranging the code to
928 not use the linker for the 16-bit code.
929 * SYSLINUX: If we're building on a machine without a Win32
930 (mingw) compiler, just skip building syslinux.exe.
931 * ISOLINUX: Support non-mkisofs mastering programs, at least
932 as long as the image is single-session. For best results,
933 ISOLINUX should be the only boot loader installed.
934 * MEMDISK: Allow the user to specify that the simulated disk
935 should be write-protected.
938 * ALL: Add an API call to get the configuration file name.
939 * SYSLINUX: Fix bug in 2.10 that prevented it from working
940 correctly for a lot of people.
941 * SYSLINUX: In the installer, make mtools a bit less fussy.
942 * Make the menu system compile with newer gcc's.
945 * MEMDISK: Handle images compressed with zip as well as with
946 gzip. Some Windows-based image tools apparently generate
947 these kinds of images by default. Patch by Patrick
949 * Major menu improvement from Murali Ganapathy.
950 * ISOLINUX: Wonderfully sick and brilliant workaround for
951 severe bugs in certain Award BIOSes; from Knut Petersen.
952 * SYSLINUX: Fix for the nomtools installed, from Frederic
954 * PXELINUX: Fix handling of IP numbers in the ranges
956 * ALL: New option "allowoptions" (defaults to 1), which
957 controls if options are allowed on the command line or not.
958 * SYSLINUX: Support building under klibc (see the klibc
959 distribution for details.)
962 * SYSLINUX: Remove residual setuid crap from
964 * Handle video pages correctly when using the API functions.
965 * Handle compiling on an x86-64 platform correctly.
966 * Menu system from Murali Krishnan Ganapathy; see the menu
967 directory for information.
968 * COMBOOT: Allow COMBOOT programs to change screen text mode.
969 * COMBOOT: Correct the documentation of how to detect
970 SYSLINUX from COMBOOT!!!!
971 * COMBOOT: Fix "get key without echo" API function.
972 * SYSLINUX: Fix bug that affected the API open function.
973 * ALL: Improve the E820 memory parser, to work around some
977 * Add new configuration command "ontimeout" to allow timeout
978 to have a different action than just pressing Enter.
979 * Add new configuration command "onerror" to allow a custom
980 command to be executed in case the kernel image is not found.
981 * Fix bugs in the COMBOOT/COM32 command-line parsing. APPEND
982 now works with COMBOOT/COM32 images.
983 * PXELINUX: Poll for ARP requests while sitting at the
984 prompt. This makes some boot servers a lot less unhappy.
985 * PXELINUX: Actually free sockets when we get a failure
986 (including file not found.) This bug would cause us to run
987 out of sockets and thus "go deaf" after a while.
988 * MEMDISK: Add an API to query for the existence of MEMDISK.
989 * SYSLINUX: Fix loading boot sectors (.bs/.bss) from floppy
991 * .c32 is now one of the extensions searched for
993 * PXELINUX: RFBG.exe seems to randomly overwrite memory
994 location 0x5700. Thus, don't use it!
995 * PXELINUX: Change pathname length max from 63 to 127; change
996 max vkernels from 128 to 64.
997 * Support Ctrl-U -> kill entire command line input.
998 * The "samples" directory contains a (barely at all tested)
999 chain loading example, chain.c32, which may be used to
1000 chainload local floppy disks and hard disks. Use with
1001 "chain fdN" or "chain hdN [partition]"; N = 0 for the first
1005 * MEMDISK: Workaround for BIOSes which go into a snit when
1006 they get a RESET command for the floppy system when there is
1007 no floppy in the system.
1008 * PXELINUX: Add "ipappend 2", which passes the hardware
1009 address of the boot interface to the kernel as a
1010 command-line option.
1011 * mkdiskimage: fix the generation of the end limit.
1012 * PXELINUX: Fix multiple bugs in chainloading of other NBPs.
1013 * MEMDISK: Fix bug that would occationally cause "ran out of
1014 input data" when using compressed disk images.
1015 * SYSLINUX: Updates for the win32 installer (from Lars Munch.)
1016 * PXELINUX: PXELINUX-specific options are now recognized both
1017 in a vendor-option-space (a.k.a. type 43 encapsulated) as
1018 well as in a site-option-space (unencapsulated.)
1019 * COM32: Don't crash when DS != 0.
1020 * COMBOOT/COM32: Make file reading work correctly. Thanks to
1021 Phung Chi Kien for submitting a test program.
1024 * ALL: Fix problem that would occationally cause a
1025 boot failure, depending on the length of the kernel.
1026 * ISOLINUX: Fix problem that would occationally cause a
1027 boot failure, depending on the length of directories.
1028 * SYSLINUX: Win32 installer now flushes buffers.
1029 * ppmtolss16: Be fully compliant with the PNM spec;
1030 actually process comments in the header and odd
1031 alignments of the various parameters, as well as
1032 "plain" (not raw) files and PBM and PGM files.
1033 * PXELINUX: Lower the default MTU to 1472 in order to deal
1034 with systems with slightly nonstandard MTUs, and PXE
1035 stacks which don't defragment correctly. Unfortunately this
1036 is very hard to test dynamically.
1039 * PXELINUX: Add a default query based on the hardware address
1040 of the boot device. This is in lower case hexadecimal form
1041 separated by dashes and including the hardware type, for
1042 example, the Ethernet (type 1) address 88:99:AA:BB:CC:DD
1043 would query the file pxelinux.cfg/01-88-99-aa-bb-cc-dd.
1044 * PXELINUX: Fix bug involving non-IP-based config file names.
1045 * SYSLINUX: New installer for WinNT-based systems, from Lars
1047 * MEMDISK: Fix handling of memory region overlap when
1048 decompressing. Thanks to Mikhail Kupchik for identifying
1052 * ALL: Reclaim even more low memory by observing that
1053 comboot_seg == real_mode_seg is perfectly fine, and by the
1054 fact that the 1000h segment managed to get unused in all
1056 * PXELINUX: Attempt to negotiate full Ethernet-sized blocks
1057 (1468 bytes) using the blksize option.
1058 * SYSLINUX: Resurrect the old no-mtools version of the
1059 installer, although as a root-only tool. Some distributors
1060 have indicated that they need a small standalone installer.
1061 * MEMDISK: Fix a memory offset computation error when
1062 installing compressed disks which generally would cause
1063 1 MB of memory to be wasted.
1064 * MEMDISK: Fix installing the E820 memory map. Calling
1065 INT 15h AX=0E820h with MEMDISK 2.03 loaded would give a
1066 completely corrupt memory map.
1067 * SYSLINUX: Make libsyslinux a dynamic library, so that it can
1068 be updated separately from client programs. The whole idea,
1069 after all, is to enable alternate programs to become
1070 syslinux installers.
1071 * Include an rpm spec file in the distribution, so rpmbuild
1075 * Actually support comment lines in the configuration file.
1076 * PXELINUX: Try to resolve some problems with stack switches.
1077 * PXELINUX: Handle PXE stacks with broken routing.
1078 With these workarounds, the remote install PXE boot floppy
1079 (rbfg.exe) from Argon Technologies should work correctly.
1080 * Fix problems with Perl scripts in UTF-8 locales.
1081 * You probably need NASM 0.98.34 or later to compile this
1082 version. 0.98.36 is recommended.
1083 * MEMDISK: Now supports gzip compressed images.
1086 * SYSLINUX: Security flaws have been found in the SYSLINUX
1087 installer when running setuid root. Rewrite the SYSLINUX
1088 installer so it uses mtools instead. It therefore now
1089 requires mtools (specifically mcopy and mattrib) to exist on
1090 your system, but it will not require root privileges and
1091 SHOULD NOT be setuid.
1094 * MEMDISK: Fix memory sizing bug when the ramdisk crosses the
1096 * MEMDISK: Add a "pause" option to stop immediately before
1097 booting, to read off the messages.
1098 * MEMDISK: Support disk images with DOSEMU headers.
1099 * Update the mkdiskimage script to handle newer mtools
1100 versions, and be able to generate disk images with DOSEMU
1101 headers (controlled by the -d option).
1102 * Fix the COM32 sample program.
1103 * PXELINUX, ISOLINUX: Fix some COMBOOT API calls.
1104 * PXELINUX: Doc fix.
1105 * Build SYSLINUX into a small library for encapsulation into
1106 other programs (however, please keep in mind this is a GPL'd
1108 * SYSLINUX: Make installer work with "owner" in /etc/fstab.
1109 * SYSLINUX: Fix issue with working on nonpartitioned hard disk
1110 devices. THIS CONFIGURATION IS NOT RECOMMENDED.
1113 * ALL: Add support for "COM32" (32-bit COMBOOT) images.
1114 * ALL: Add an API for COMBOOT/COM32 images. See comboot.doc
1115 for details. There is a C development environment for
1116 COM32 being created; it should be ready at some point in
1118 * Fix mbr.asm so that it actually works.
1119 * SYSLINUX: The syslinux installer *SHOULD* now be safe to
1121 * PXELINUX: Fix bug where PXELINUX would override random
1122 chunks of the UNDI code segment! Thanks to Kevin Tran for
1124 * ISOLINUX: Fix a bug related to slashes in pathnames.
1125 * ISOLINUX: Fix a bug in handling initrds over 128 MB.
1126 * ALL: Make the <Ctrl-V> key print out the version; this is
1128 * Add a small script, mkdiskimage, to create a DOS-formatted
1129 hard disk image using mtools. This may be useful in
1130 conjunction with MEMDISK.
1131 * ISOLINUX: Search for a /boot/isolinux directory as well as
1133 * ALL: Fix a bug related to very long configuration files.
1134 * PXELINUX: Work around a NASM bug which would result in no
1135 delay before reset if an error occurs.
1138 * ISOLINUX: Remove code no longer used which caused hangs on
1139 some Toshiba laptops.
1142 * ALL: NASM 0.98.32 or later is now required to build
1143 SYSLINUX from sources.
1144 * SYSLINUX: put back in the workaround for the BIOS floppy
1145 table. This seems to be a requirement for "extended" floppy
1146 formats to work correctly.
1147 * SYSLINUX: No longer warn if one is trying to boot on a 286
1148 or older. The above BIOS workaround no longer fits if the
1149 requirement to use only 8086-compatible code in the early
1150 boot is maintained. It made sense in 1994, but in 2002 a
1151 286 or older is a museum object.
1152 * SYSLINUX: Use a downright bizarre, stateful algorithm to try
1153 to guess the maximum transfer size. I am *hoping* this will
1154 cut down on the number of systems for which -s is required
1155 to work at any acceptable speed.
1156 * ISOLINUX: Add a few more workarounds for various broken El
1158 * Make sure .depend files aren't accidentally packed...
1159 * ALL: Fix bugs in the extension-detect code; this caused
1160 files like COMBOOT images and CD boot sectors to be
1161 mis-identified as Linux kernels and rejected.
1162 * ALL: Fix the return from COMBOOT.
1163 * ALL: Do some of the early groundwork for supporting DOS
1164 system calls in COMBOOT.
1165 * Get rid of unnecessary "near" directives, making the code
1167 * PXELINUX: Put the PXE stack back in the init state before
1168 invoking a chain-loaded NBP.
1169 * PXELINUX: Actually found the combination of calls that
1170 allows some (most?) PXE 2+ stacks to be unloaded from memory
1172 * PXELINUX: Add "keeppxe" command-line option to disable
1173 the standard unloading of the PXE stack.
1176 * SYSLINUX: fix bug that would cause valid kernel images to be
1180 * Work on removing gratuitous differences between modules.
1181 * Break up the source in common and module-specific files.
1182 * PXELINUX: Allow chaining of other PXE NBPs.
1183 * ISOLINUX: Allow loading "CD-ROM boot sectors".
1184 * ALL: generalize the definition of a boot sector/NBP.
1187 * PXELINUX, ISOLINUX: Fix bugs in the new core code.
1190 * Fix a "brown paper bag" class bug in the new core code.
1193 * Major code restructuring.
1194 * Relax the conventional memory limits somewhat.
1195 * MEMDISK: Set up the "version number string" pointer in the
1197 * SYSLINUX: Fix, again, "the bug that won't die": the use of
1198 the offset parameter with the SYSLINUX installer.
1199 * SYSLINUX: Fix possible superblock corruption problem in the
1203 * Handle bug in the location of initrd.
1206 * MEMDISK: Make compile with newer versions of gcc.
1209 * ISOLINUX: Support booting disk image files (to boot DOS or
1210 other non-Linux operating systems), *IF* the BIOS works
1211 correctly; unfortunately many BIOSes apparently don't.
1212 * Support Linux boot protocol version 2.03 (explicitly
1213 specify the initrd address limit.)
1214 * Handle small "pseudo-kernels"; images that use the Linux
1215 kernel boot protocols but are less than 64K in size.
1216 * MEMDISK: New subsystem; this is a driver which allows
1217 legacy OSes to boot using an in-memory simulated disk.
1218 See memdisk/memdisk.doc for more info.
1219 * PXELINUX, ISOLINUX: Correctly handle files larger than 65535
1220 blocks (32 MB for PXELINUX, 128 MB for ISOLINUX.)
1221 * PXELINUX: Make a best-effort attempt at freeing all memory
1222 claimed. From the looks of it, it will fail on most PXE
1226 * Limited support for hardware flow control when using a
1227 serial port console.
1228 * Support specifying the serial port I/O address explicitly.
1229 * Make DOS installer hopefully behave more nicely when used on
1230 recent Windows versions.
1231 * Fix returning to text mode when a font has been specified.
1232 * Attempt to detect missing serial port hardware and disable
1233 the serial port if there is nothing there.
1236 * Make the ppmtolss16 program handle color conversion more
1238 * Clean up "make install" target, honour INSTALLROOT if it
1240 * SYSLINUX: Fix stack-smash bug identified by Steffen
1242 * Hopefully fix return-to-text-mode on some graphics cards.
1243 * ISOLINUX: Bug workaround for Award BIOS 4.51, and perhaps
1244 other buggy BIOSes as well.
1247 * PXELINUX: Allow the DHCP server to override the
1248 configuration file name and pathname prefix, using
1249 "site-specific" DHCP options.
1250 * PXELINUX: Documentation fixes.
1251 * PXELINUX: Fix the "ipappend" option; the last two values
1252 were reversed vs. what the kernel expected.
1253 * Introduce a way to return to text mode once we are already
1254 in graphics mode. This may be useful for F-key help
1256 * Fix several bugs in the way return to text mode was handled.
1259 * ISOLINUX: Support full pathname searches. Max length for a
1260 pathname is 255 characters. As a result, only 64 "label"
1261 statements are supported in ISOLINUX.
1262 * PXELINUX: Max filename length extended to 63 characters.
1265 * Add support for graphical splash screens.
1266 * Add mode control characters, which allows you to control
1267 message display output depending on output mode (text,
1268 graphics, or serial port.)
1269 * ISOLINUX: New program, which boots Linux from a CD-ROM
1270 without using floppy emulation mode. See isolinux.doc for
1272 * PXELINUX: Don't search for boot sector file types, since
1273 they don't work anyway.
1274 * SYSLINUX: Document the LOCK command for Win9x, and the error
1275 dialog box for WinNT/2K.
1278 * PXELINUX: Fix code for finding !PXE from PXENV+. This was
1279 due to a spec bug; match the most recent spec since that
1280 seems to be what implementations actually do.
1281 * SYSLINUX: Add some smarts to the boot sector, which
1282 hopefully should reduce the number of systems which require
1283 stupid mode ("syslinux -s").
1284 * PXELINUX: Document further some of the pathologies with old
1286 * When specifying a "default" command line, no longer
1287 automatically appent "auto". See the "DEFAULT" command in
1288 syslinux.doc for more information.
1289 * PXELINUX: Clean up the allocation of local socket numbers.
1292 * PXELINUX: Rename pxelinux.bin to pxelinux.0, to match what
1293 most PXE servers seem to expect.
1294 * PXELINUX: Update the DHCP/boot server setup documentation.
1295 * PXELINUX: Support new "localboot" option for "label"
1297 * PXELINUX: More robust parsing of DHCP/boot server packets.
1298 * PXELINUX: Include a small utility program "gethostip" to
1299 compute hexadecimal IP addresses.
1302 * PXELINUX: Fix bugs introduced by new A20 code. (SYSLINUX
1303 has also been changed for code consistency reasons, but I'm
1304 pretty sure the changes are don't care on SYSLINUX.)
1305 * Documentation updates.
1306 * PXELINUX: Add "ipappend" option to generate an ip= option to
1310 * PXELINUX: Not all PXE stacks fill in the IP address for a
1311 type 3 cached info query. Use a type 2 cached info query
1312 for this information (only.)
1313 * Yet another attempt at A20 coding. Now support BIOS call
1314 15:2401 as well, and handle machines which always have A20
1316 * Support memory detection using INT 15h, AX=0E820h. BIOS
1317 manufacturers have apparently gotten sloppy about keeping
1318 INT 15h, AX=0E801h working properly.
1319 * Don't issue <CR><LF> onto the serial port when we're doing
1323 * Yet another A20-code update. It seems some "legacy-free"
1324 machines and embedded gear simply don't have a KBC to talk
1325 to, and that waiting for one will wait forever. Sigh.
1328 * SYSLINUX: Implement a hack for BIOS drivers which hog significant
1329 chunks of low memory during boot. (Note: PXELINUX already
1330 had this modification. SYSLINUX does still require that the
1331 low 512K is available; PXELINUX requires 384K. Machines
1332 with a physical memory hole in the low 640K cannot boot
1333 Linux no matter what.) Depending what the reason is for the
1334 memory hole, a new kernel (2.4.0-test3-pre3 or later) may be
1336 * SYSLINUX: Default installer binary now compiled against
1337 glibc 2.1. If this is inappropriate for your system and you
1338 still want to use the offical version of SYSLINUX, please
1339 follow the instructions in "distrib.doc" to rebuild the
1341 * SYSLINUX: Linux installer program now supports -o <offset>
1342 option which does a loopback mount with the
1343 -o loop,offset=<> option. Useful to run SYSLINUX on an
1344 individual partition of a whole-harddisk image.
1345 * Include the source code to a Master Boot Record (MBR)
1346 functionally equivalent to the one installed DOS except it
1347 includes EBIOS support, and should be resistant to geometry
1348 changes. The MBR code is public domain.
1349 * PXELINUX: Fix "double p" bug: if the tftp prefix was null,
1350 all filenames would get a "p" preprended, e.g.
1351 "ppxelinux.cfg" and "pvmlinux".
1354 * PXELINUX: Workaround for PXE ROMs based on the Intel PXE PDK
1355 3.0 build 071 and earlier: missing !PXE structure pointer.
1356 * PXELINUX: Handle larger BOOTP/DHCP packages.
1357 * PXELINUX: The command line passing was broken; fix.
1358 * PXELINUX: Make COMBOOT images work.
1359 * PXELINUX: Documentation on how to make booting work using
1360 the PDK 3.0-derived clients, which aren't so generous as to
1361 allow booting with only "PXEClient" specified.
1364 * PXELINUX: RFC 1123 states that a TFTP implementation MUST
1365 use adaptive timeout, "at least an exponential backoff of
1366 retransmission timeout is necessary." Implement a very
1367 simple exponential backoff for retransmits.
1368 * PXELINUX: Updated documentation, including pointer to new
1370 * PXELINUX: When sending ERROR due to bad OACK, use the proper
1371 destination port number (why are TFTP port numbers so odd?)
1372 * PXELINUX: If the boot dies in the middle somewhere,
1373 eventually give up and reset the machine (unattended
1377 * New program PXELINUX to do network booting using a
1378 PXE-compliant (Pre-Execution Environment) network booting
1379 PROM. See pxelinux.doc for details.
1382 * Serial console support. See syslinux.doc for details.
1385 * Change HIGHMEM_MAX to 38000000h to (hopefully) avoid the
1386 kernel stepping on it; 3f000000h was apparently a higher
1387 limit than the kernel used!
1390 * Add sys2ansi.pl script to display the contents of a
1391 colorized SYSLINUX file.
1392 * Changed the io_delay once again, after a report that the
1393 old delay port causes hangs on some systems.
1396 * Frob the "fast A20 gate" port as well as the keyboard
1397 controller; will this help systems with problems?
1398 * Be even more paranoid about A20, unfortunately even this
1399 seems to be not paranoid enough... what I don't understand
1400 is that if there is hardware out there *this broken*, how
1401 can it run Linux at all? Report an error message rather
1402 than hang forever if A20 is stuck.
1403 * Include some intermediate files in the distribution, plus
1404 provide a "make installer" target for distributors to relink
1405 the install programs only. I would prefer the syslinux boot
1406 loader proper to be "binary clean" for debuggablity -- use
1407 "make clean ; make installer" to rebuild the installers only.
1410 * Don't get confused by directories, volume labels, or VFAT
1412 * Use INT 15h, AX=0E801h to query memory size before trying
1413 INT 15h, AH=88h. This not only provides more headroom
1414 between the kernel and the initrd on large-memory machines,
1415 but it appears some recent BIOSes actually have started
1416 returning garbage for the AH=88h (older) call.
1417 * Trust high memory beyond the 15 MB mark if the user has
1418 specified it, or if obtained with INT 15h, AH=0E801h (with
1419 no memory holes above 1 MB.)
1422 * Increase A20M delay and put in a test to avoid problems on
1423 certain IBM Thinkpads (thanks to Donnie Barnes of RedHat
1424 for vital info on this one.)
1425 * Support COMBOOT style boot command images.
1426 * Support chain loading (foreign operating systems, e.g. DOS).
1427 * Include a new "copybs" DOS utility to copy a boot sector to
1428 a file (under Linux, use "dd".)
1429 * Fix the DOS installer to work for disks over 32 MB.
1430 * SYSLINUX should now handle disks with more than 65536 tracks.
1433 * Fix a bug that caused "label" statements in syslinux.cfg to
1434 not be handled properly.
1435 * Updated the documentation. Among other things, we now allow
1436 up to 128 "label" statements.
1439 * Fix for booting old (pre-initrd) kernels.
1440 * It seems at least some versions of OS/2 doesn't set up all
1441 the fields in the superblock correctly. Account for that.
1442 * Fix bug that caused boot failure when using the mem= option.
1445 * Loading from partitions now should work properly. (Actually
1446 tested, this time. You should even be able to dd a floppy
1447 to a partition and boot from it.)
1448 * Removed large workaround code for an alleged ancient BIOS
1449 bug I have never actually seen. The -s option should work
1450 on those machines, anyway.
1451 * Support for simple keyboard remappings, same as used by
1452 LILO (once again to support localization.) The program
1453 keytab-lilo.pl from the LILO distribution included to
1455 * Added a "safe, slow and stupid" (-s) option to the
1456 installers. This option will lobotomize the boot sector to
1457 hopefully work on even very buggy BIOSes.
1460 * Ability to load a VGA font on bootup (for localized Linux
1464 * Bug fix in the Linux installer.
1465 * Added a workaround for a bug in certain AMI/Intel BIOSes
1466 when booting from CD-ROM.
1467 * Documentation changes.
1470 * FAT16 filesystems are now supported.
1473 * Now compiles under Linux, using NASM, rather than using
1474 Turbo Assembler under DOS. See http://www.cryogen.com/Nasm
1475 for information about NASM.
1476 * Linux-hosted SYSLINUX installer, as well as a
1477 rewritten DOS installer (now is written in assembler, so we
1478 don't need Turbo C.)
1481 * Added support for loading bzImage and initrd loading, and made
1482 SYSLINUX new-setup-code aware (SYSLINUX 1.30 id=0x31).
1483 * Added LILO-style kernel labels; see the LABEL and IMPLICIT
1484 keywords in README file.
1485 * Added support for colorization of intro and help screens.
1486 * The vga= option is now handled correctly.
1487 * Massive rewrite of large chunks of the code in order to
1488 support the first two new features.
1491 * Added simple online help at the "boot:" prompt.
1492 * Removed 2880K image as I no longer have access to such a
1493 floppy drive. (Donations accepted!!)
1494 * Decided to distribute the source in a subdirectory rather
1495 than in a nested zipfile.
1498 * Removed a sanity check which would cause booting to fail on
1499 Phoenix BIOS version 4.03. Apparently this BIOS is buggy.
1502 * Added configuration file SYSLINUX.CFG. This file contains all
1503 configurable options, and can be edited from any OS which can
1504 access an MS-DOS filesystem; there is no longer a need to run
1505 SYSLINUX.EXE except to write the boot sector.
1506 * Default command line now given by "default" line in config
1508 * LINUXMSG.TXT and BOOTMSG.TXT hard-coded file names replaced by
1509 "display" and "prompt" lines in config file.
1510 * LILO-style option appending now supported ("append" line in
1512 * Prompt timeout is now supported ("timeout" line in config
1513 file). The timeout is cancelled when anything is typed on the
1515 * Pressing <ESC> or <Ctrl-C> at the Loading... stage now aborts
1516 the kernel loading in progress and returns the user to the
1518 * The installer now automatically sets the READONLY flag on
1520 * Added 2880K disk image.
1523 * Fixed bug that would prevent booting from double-density
1524 floppies and other DOS filesystems with multiple sectors per
1526 * Added 720K disk image.
1527 * Changed default kernel name on disk images to LINUX.
1530 * Fixed bug that would garble the command line on recent kernels
1531 with more than 4 sectors of setup code (this wasn't really a
1532 *bug*; rather, a kernel change broke the code. Unfortunately
1533 the Linux boot interface is still sorely undocumented).
1534 * Added BOOTMSG.TXT file support (message file which does not
1535 force display of the boot prompt).
1538 * Fixed bug on some (most?) 386 BIOSes would require two boot