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Re: GRUB isn't working for bootable CD

From: Chris Lingard
Subject: Re: GRUB isn't working for bootable CD
Date: Sat, 11 Oct 2003 10:13:35 +0100
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On Wednesday 08 October 2003 7:40 pm, Thierry Laronde wrote:
> Hello,
> On Wed, Oct 08, 2003 at 09:33:40AM -0400, Harmon S. Nine wrote:
> > For those unfamiliar with the "el torito" method of booting from CD (I

> I had made some patches (two different versions) at the time GRUB 0.92
> was released. This GRUB version which "works" is a patched version and
> not a vanilla one. The problem is that an El Torito able BIOS is a LBA
> able one and GRUB detects the support about LBA and try to access the
> boot image on the CD via LBA commands, but, unfortunately, the emulation
> is a CHS one built on an LBA accessed device : by switching to LBA, GRUB
> accesses the raw CD (the iso fs) and not the boot image. Hence it fails
> to access stage2.
> Solution : keep using GRUB 0.92 + the patches or port the patches to
> 0.93.


Sorry Thierry, first reply posted direct to you. 

You answered me the same way some months ago. I have got the patch and script,
and am just starting to use it. I am hoping to issue my next bootable CD in 
the near future,  (LFS boot CD).  It works great.

It will be no problem porting the patch to whatever the official version of 
grub is.   I could even post the tested patch and script to my web space.

My worry would be that this disobeys grub's official maintainers; it is a pity
that this is not included in an official release, making grub complete, and
not dependant on lilo for distro CDs.


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