SOLVED: Cannot boot using Grub from CD

[Chris Lale <chrislale@untrammelled.co.uk>]

Andrew Sackville-West wrote:
> On Fri, Feb 23, 2007 at 04:55:14PM +0000, Chris Lale wrote:
>   
> > [...]
> >
> >    Error 15: File not found
> >
> >    Press any key to continue...
> >     
>
> so grub cannot find the file, probably the kernel. have you tried the
> grub command line? maybe you've got the disks misnamed or something.
>
>   

I narrowed the problem down to menu.lst. Thanks, Andrew, for suggesting 
the command line which worked fine, after booting from the Grub boot CD, 
despite reporting an error for the "savedefault" command:

   grub> savedefault
   Error 27: Unrecognised command

This error does not arise when I boot and use the command line from a 
Grub boot floppy. I am guessing that this error is something to do with 
the CD being read-only.

My solution is to remove all the "savedefault" commands from the copy of 
menu.lst on the CD. I have documented the whole process here: 
http://newbiedoc.berlios.de/wiki/How_to_create_a_Grub_disc_to_boot_a_Debian_GNU/Linux_system

Thanks to Alan and Andrew.

--
Chris.