similar to: chain.c32: Chainboot failed!

Comments fix and usage output corrected for chain.c32 - Gert Hulselmans Signed-off-by: Gert Hulselmans <kimmik999999 at yahoo.co.uk> $ diff -u syslinux-3.84/com32/modules/chain.c.old syslinux-3.84/com32/modules/chain.c --- syslinux-3.84/com32/modules/chain.c.old 2009-12-29 01:46:34.058793767 +0100 +++ syslinux-3.84/com32/modules/chain.c 2009-12-29 01:53:41.150794351 +0100 @@ -49,7

The following patch for chain.c32 adds support to boot the Recovery Console of Windows NT/2K/XP. Normally when you want to boot the recovery console, you need to patch "cmdcons\0" into the bootsectorof the partition (8 bytes starting at 0x3 (4th byte)). We can do this patching in memory: strcpy((char *) 0x7c03, "cmdcons"); To boot the recovery console with chain.c32:

$ git log -p commit d8c5e94803fa01f0d52475a50b69681ad3135700 Author: Gert Hulselmans <kimmik999999 at yahoo.co.uk> Date: Sat Jan 9 15:30:49 2010 +0100 chain.c32: Add grldr= command for Grub4dos grldr of Grub4dos wants the partition number in DH: 0xff: whole drive 0-3: primary partitions 4-*: logical partitions diff --git a/com32/modules/chain.c

>From 1db8a8919482dbed4cc15509d8078b2f16a289bb Mon Sep 17 00:00:00 2001 From: Gert Hulselmans <gerth at zytor.com> Date: Wed, 30 Jun 2010 14:10:23 +0200 Subject: [PATCH] chain.c32: add grubcfg= for passing an alternative config filename to GRUB Legacy GRUB Legacy reserves 89 bytes for storing the filename of the configfile from memory address 0x8217 to 0x826f. We allow overwriting the

Hi, I am using syslinux-4.00-pre24, -pre27 and -pre31. chain.c32 fails for pre27 and pre31 for particular configs ... shown below. 1) works on pre24, fails with error message "Chainboot failed!" for pre27 and pre31 LABEL local MENU DEFAULT MENU LABEL Local Boot ... (skip PXE boot) KERNEL chain.c32 APPEND hd0 0 2) works on all three. LABEL local

'nopassany' is missing in the MEMDISK documentation: http://www.zytor.com/pipermail/syslinux-commits/2010-February/000096.html - Gert Hulselmans commit aeb2406ea701d974c85aa7fdd9af7c53106d7e48 Author: Gert Hulselmans <gerth at zytor.com> Date: Sat Mar 6 22:33:09 2010 +0100 Document 'nopassany' in MEMDISK documentation. diff --git a/doc/memdisk.txt b/doc/memdisk.txt

filename to GRUB Legacy GRUB Legacy reserves 89 bytes for storing the filename of the configfile from memory address 0x8217 to 0x826f. We allow overwriting the default value (/boot/grub/menu.lst) when grubcfg=<filename> is used together with grub=<loader>. Examples: chain.c32 fs grub=/boot/grub/stage2 grubcfg=/boot/grub/grub.lst chain.c32 hd1,10 grub=/boot/grub/stage2

The Windows recovery console doesn't work with chain.c32 3.85 or 3.86-pre1. COM32 chain.c32 APPEND cmldr=/cmldr Initially reported by cdob at: http://www.boot-land.net/forums/index.php?showtopic=10487#entry94001 It did work fine with the: "chain.c32: Handle nonlinear logical partitions" patch. The following patch broke the recovery console hack: chain.c32: add option to set hidden

New module which check if the PLoP Boot Loader already has booted a CDROM or USB drive by checking for the presence of the PLoP INT13h hook. The following assembly code (NASM) can detect the PLoP INT13h hook: mov eax,'PoLP' ; Reverse of 'PLoP' mov ebp,'DKHC' ; Reverse of 'CHKD' int 13h cmp eax,' sey' ; Reverse of 'yes ' jz

Improving chain.c32 help message Impact: Error message is more detailed In case of syntax error, the message is far more detailed and provides the same content as the documentation integrated in the source code. You can get this patch from Erwan's git repo: http://git.zytor.com/?p=users/erwan/hdt.git;a=commit;h=3fc3126d0c7df5701680e043c34f200166f24564 Add 'isolinux=' option to

Allow the grub loader to (optionally) support using a GRUB menu file. For example chain fs grub=stage2,grub.conf will load GRUB's stage2 and pass the (absolute) path to the file "grub.conf" in the Syslinux filesystem to GRUB's stage2. The path is passed to stage2 in GRUB's device/partition syntax (eg, "(hd0,1)/foo"). Note that we don't check whether the

cat.c32: check if filename exists. Signed-off-by: Gert Hulselmans <gerth at zytor.com> --- com32/samples/cat.c | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) diff --git a/com32/samples/cat.c b/com32/samples/cat.c index 16380b0..3930f74 100644 --- a/com32/samples/cat.c +++ b/com32/samples/cat.c @@ -15,13 +15,18 @@ int main(int argc, char *argv[]) printf("argv[%d]

Why doesn't the Windows Syslinux installer show: --offset and --directory too (I know it is not supported)? Because the Linux versions show the Windows/dos specific commands: --mbr --active and --force I didn't check the DOS version. If all options will be displayed unconditionally for all installers, it might be a good idea to add: --offset -t Offset of the file system on the

The program name of the module can't be retrieved with argv[0]. I tested it by running cat.c32 (com32/samples/cat.c32). In Syslinux 3.85, argv[0] returns an empty string. In Syslinux 4.00-pre36, argv[0] returns some garbage characters. ISOLINUX 3.85 2010-02-20 ETCD Copyright (C) 1994-2010 H. Peter Anvin et al argv = 0x00182c44 argv[0] = 0x07fbffc3 = "" argv[1] = 0x00182c34 =

Good day Gert Hulselmans, You had reported to me at one point that MEMDISK -> .ISO -> ISOLINUX had failed under certain circumstances. I just noticed with a MEMDISK 3.86 that specifying the "iso" option on the command-line actually resulted in the .ISO getting BIOS drive number 0xFF. I had to specify "iso harddisk=224 pause" to confirm that it resulted in 0xE0 (hd96).

[1} Gert Hulselmans wrote: > > ...Thanks. > > I still think chain.c32 should be able to do a reverse partition > lookup, to determine from which partition it was booted. This would be > useful to boot ntldr, setupldr.bin, bootmgr, grldr, ... when you want > to boot it from the same partition as from which SYSLINUX is booted, > without specifying the partition explicitly

I and some other people have problems with running the freedos image included in Ultimate Boot CD (UBCD), when using memdisk for floppy emulation. Memdisk starts booting the image and freedos shows the following menu: 0 Boot Clean 1 Boot UMBPCI (silent) 2 Boot UMBPCI (optimal) 3 Boot UMBPCI (semi-defensive) 4 Boot EMM386 (optimal) 5 Boot EMM386 (semi-defensive) 6 Boot no UMB (defensive) 7 Boot

Add detection code for "FreeDOS (eXtended FDisk)" MBR to disklib. Signed-off-by: Gert Hulselmans <gerth at zytor.com> --- com32/gpllib/disk/mbrs.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/com32/gpllib/disk/mbrs.c b/com32/gpllib/disk/mbrs.c index 37309e1..6150fcf 100644 --- a/com32/gpllib/disk/mbrs.c +++ b/com32/gpllib/disk/mbrs.c @@ -27,7 +27,6

Grub Legacy stage2 will read the install_partition variable from memory address 0x8208. We only need to change the value at 0x820a to the correct partition number: -1: whole drive (default) 0-3: primary partitions 4-*: logical partitions Signed-off-by: Gert Hulselmans <gerth at zytor.com> --- com32/modules/chain.c | 13 ++++++++----- 1 files changed, 8 insertions(+), 5

Good day to all, Gert Hulselmans requested a feature for MDISKCHK.COM that would function roughly like GETARGS.COM[1] by Murali Krishnan Ganapathy: DOS SET command output for MEMDISK kernel arguments passed by previous boot-loaders. He also needed to support the case for MEMDISK-in-a-MEMDISK type situations, where all MEMDISK kernel arguments could be gathered together and output as a list