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

From: Frombenny <frombenny@gmail.com>
To: The development of GNU GRUB <grub-devel@gnu.org>
Subject: Re: How to prepare an ISO 9660 CD for booting via GRUB ?
Date: Thu, 01 Apr 2010 18:59:09 +0200	[thread overview]
Message-ID: <4BB4D0DD.3070106@gmail.com> (raw)
In-Reply-To: <105811540531718@192.168.2.69>

Your question is how to make a cd with grub on it ? Or a way to boot an 
iso from grub ?

If it's the second question, I made this page for the ubuntu doc in 
French : 
http://doc.ubuntu-fr.org/tutoriel/grub2_lancer_des_images_iso#versions_karmic

With an entry for Ubuntu (for an iso located in an iso folder on 
/dev/sda5) like that :

menuentry "ISO Live - Ubuntu 9.10 Karmic AMD64" {
insmod loopback
insmod iso9660
set isofile="/iso/lucid-desktop-amd64.iso"
loopback loop (hd0,5)$isofile
linux (loop)/casper/vmlinuz locale=de_DE bootkbd=de console-setup/layoutcode=de iso-scan/filename=$isofile boot=casper file=/cdrom/preseed/ubuntu.seed noprompt quiet splash --
initrd (loop)/casper/initrd.lz
}

Just change the line "set isofile=" to your version of ubuntu iso.

Benoit

Le 01/04/2010 15:49, Thomas Schmitt a écrit :
> Hi,
>
> 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 :)
>
> Thomas
>
>
>
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>    