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Booting from CD Re: (no subject)
From: |
Thomas Jahns |
Subject: |
Booting from CD Re: (no subject) |
Date: |
Mon, 10 Sep 2001 01:40:52 +0200 |
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