Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have a bootable iso which boots into isolinux 4.0.3 and I want to make it chainload itself (my actual goal is to chainload isolinux.bin v4.0.1-debian, which should start up the Ubuntu10.10 Live CD, but for now I just want to make it chainload itself).

I can't get isolinux to chainload any isolinux.bin, no matter what version. It either freezes or shows a "checksum error" message. I'm using VMWare to test the iso.

Things I have tried:

.com32 /boot/isolinux/chain.c32 /boot/isolinux/isolinux-debug.bin (chainload self)

this shows

Loading the boot file...
Booting...

ISOLINUX 4.03 2010-10-22  Copyright (C) 1994-2010 H. Peter Anvin et al
isolinux: Starting up, DL = 9F
isolinux: Loaded spec packet OK, drive = 9F
isolinux: Main image LBA = 53F00100

...and the machine freezes.

Then I've tried this

(chainload GRUB4DOS 0.4.5b)
chainloader /boot/isolinux/isolinux-debug.bin

Result:

Error 13: Invalid or unsupported executable format

Next try:

(chainload GRUB4DOS 0.4.5b)
chainloader --force /boot/isolinux/isolinux-debug.bin
boot

Result:

ISOLINUX 4.03 2010-10-22  Copyright (C) 1994-2010 H. Peter Anvin et al
isolinux: Starting up, DL = 9F
isolinux: Loaded spec packet OK, drive = 9F
isolinux: No boot info table, assuming single session disk...
isolinux: Spec packet missing LBA information, trying to wing it...
isolinux: Main image LBA = 00000686
isolinux: Image checksum error, sorry...

Boot failed: press a key to retry...

I have tried other things, but all of them failed miserably. Any suggestions?

share|improve this question

1 Answer 1

You will need chain.c32:

LABEL chain_isolinux
COM32 /boot/isolinux/chain.c32
APPEND isolinux=/boot/isolinux/isol401.bin

http://syslinux.zytor.com/wiki/index.php/Comboot/chain.c32

You also need to make your ISO properly. You need the -boot-info-table option.

mkisofs -o output.iso -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table CD_root

You can add additional parameters to mkisofs too (like adding support for Rock Ridge, ...).

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.