On Thursday 09 August 2001 10:45, George Murga wrote:
> I want to know if it's possible to have a menu entry in the boot menu
> of grub that would make the computer boot from a cd? I dont know what
> to use as the root entry?

Because the way El-Torito works to make cds bootable is essentially to map a 
certain part of the cd to one of the usual bios devices (floppy, hard disk) 
you would simply boot from a floppy in most cases.
So you would use root(fd0).

With my DC2976UW (I hope I got the numbers right, it's a Dawicontrol UW-SCSI 
controller) I use the following entry which also boots from floppy:

#   entry for first floppy
title Diskette in floppy0
# the following 3 lines correspond to my setup and can be omitted
lock
hide (hd0,1)
unhide (hd0,0)
pause Please insert floppy disk in drive 0 now^G!
root (fd0)
chainloader +1

As for no-emulation mode I think the hostadapter bios
would prevent grub from being booted at all, but I never encountered such 
media.

Ciao, Thomas Jahns
-- 
"Computers are good at following instructions,
 but not at reading your mind."
D. E. Knuth, The TeXbook, Addison-Wesley1984, 1986, 1996, p. 9

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