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How to prepare an ISO 9660 CD for booting via GRUB ?

From: Thomas Schmitt
Subject: How to prepare an ISO 9660 CD for booting via GRUB ?
Date: Thu, 01 Apr 2010 15:49:37 +0200


i would like to learn how GNU xorriso can make
use of GRUB.

Are there any specs available, or an example
of a GRUB enhanced ISO 9660 image that boots
from CD on PC BIOSes ?

I know about ECMA-119 (ISO 9660) and El Torito
CD booting specs, but few about GRUB.

In january 2010 Robert Millan announced
GNU isofsmk. In the course of the following
discussions he wrote:
> So if you'd like to create a GRUB bootable disk, you'd do something
> like:
>   cat boot.img core.img > tmp
>   mkisofs --embedded-boot tmp -o grub.iso -r somedir

I did this with isofsmk-1.13 and a dummy file
"tmp" (not boot.img+core.img) in the hope to
learn what kind of El Torito record gets
produced. But i cannot spot any.
mkisofs just copied "tmp" to the System Area in
block 0 to 15 of the ISO image.

So i would need a more realistic test setup
or some explanations.
Any help with a quick start is appreciated.

Have a nice day :)


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