Re: Calling grub from install CD?

Mark wrote:

Is there a way to somehow get into grub right from the install CD?

Yes, but what are you hoping to do?

I messed up the boot record or something and was hoping to boot into my system in order to run grub-install.
I tried to run it from the rescue disc, but got an error saying it could not find /usr/sbin/grub - for whatever weird reason (the
file is there).
So I thought I could get into my regular system that way and then run grub-install.

Can I enter a specific command at the initial install CD

prompt - the

one where I usually enter "linux askmethod" or "linux rescue"?

You can go into the rescue mode and, then, play with GRUB to install to

a hard drive (e.g. to get a system to boot that's not working right).

But if you're hoping to just get into GRUB to boot something, and not
reconfigure a GRUB installation, I don't know how you'd go about doing

that with the CD. I've done that with floppies, years ago, after a hard

drive shuffle upset a multi-boot system.

Initially, I told the installer to install the boot loader in the first partition rather than the MBR.
After the installation, booting failed and it dropped me off at the grub prompt.
I manuall initiated the boot process from there and got into the system to run grub-install. After that everything was fine.

Now I have to do something similar, but I can not get into the initial grub prompt. So I'm trying to get in there again...

Thanks,

MARK

I've had to do this many times. Here is how I do it:
Boot a live cd (knoppix, etc.)
open a terminal and mount your root partition (eg. /dev/hda1 at /media/hda1)

cd to your root and follow exactly:
mount -t proc proc $PWD/proc
mount -t sysfs sysfs $PWD/sys
mount -t tmpfs tmpfs $PWD/dev
mkdir dev/pts
mount -t devpts devpts $PWD/dev/pts
chroot $PWD /bin/bash
/sbin/udevstart

Hope this was any help!
-Steven