Re: GRUB problem
On Friday 27 June 2003 04:28, Anita Lewis wrote:
> cr, it looks like /boot is available from both /etc/fstab and from your df
> listing. I am assuming that you ran 'update-grub' first to produce
> menu.lst, but even if you hadn't done that, by now you have rerun
> grub-install enough.
>
> I notice that 1. has --root-directory=boot. That should be
> --root-directory=/boot according to the README.Debian file.
So it should. I'm fairly sure I typed it in correctly in practice. I just
misquoted in my email.
> The other thing to check is in your menu.lst
> It says:
> kernel /vmlinuz-2.2.20-idepci root=/dev/hda1 ro
>
> Is that where that kernel is or is it /boot/vmlinuz-2... ?
>
> I think that /vmlinuz is a symlink to /boot/vmlinuz-2...; so /vmlinuz might
> work, but I don't think what you have will work unless that is actually
> what is in / .
Well, in my system, /vmlinuz is a symlink thus:
lrwxrwxrwx 1 root root 26 Jun 12 08:25 vmlinuz ->
boot/vmlinuz-2.2.20-idepci
and /boot/vmlinuz is:
-rw-r--r-- 1 root root 665509 Jun 21 23:05 vmlinuz-2.2.20-idepci
As I read it, my menu.lst which is as follows:
title Debian GNU/Linux, kernel 2.2.20-idepci
root (hd0,0)
kernel /vmlinuz-2.2.20-idepci root=/dev/hda1 ro
savedefault
first sets root to (hd0,0) (i.e. /dev/hda1 or /boot)
then tries to load vmlinuz-2.2.20-idepci , passing it the parameters
of "root=/dev/hda1"
So if the parameters are wrong, it shouldn't matter until after vmlinuz is
loaded. My impression of the boot sequence is that Grub stage 1 (in the
MBR) loads stage 1.5, which loads stage 2, which loads vmlinuz. And my
system doesn't seem to be getting any further than stage 1.5 or so.
Hmmm, I suppose it's loading the *right* stage1_5? /boot/boot/grub is full
of ???_stage1_5's that install-grub copied there; the one it wants is
e2fs_stage1_5. If it loaded the wrong one it certainly wouldn't be able to
find the next file in the process. OTOH I just copied e2fs_stage1_5 as
stage1_5 - but it made no difference.
> Unfortunately my /boot is on my root partition here where I just tried this
> myself. If you think that your MBR settings, whatever those are, might be
> messed up, you could try installing grub on a floppy. I just did that on
> my system.
I'm pretty hazy about the nuts and bolts of what goes in the MBR, I must
admit.
> First I ran update-grub after installing grub on the system. I edited
> /boot/grub/menu.lst which had root(hd0,0) to make it (hd0,2) since it is on
> /dev/hda3. The rest of it seemed fine.
Hmmm, update-grub rewrote menu.lst as
root (hd0,0)
kernel /vmlinuz-2.2.20-idepci root=/dev/hda5 ro
I left that unchanged
> Then I ran 'grub-install /dev/fd0' with a floppy in the drive. So you
> would do 'grub-install --root-directory=/boot /dev/fd0' I think.
Yes, I did that. It produced a floppy which, when booted off, just says
'GRUB' and hangs.
I think I'll see if there's a Grub-specific list I can pursue this on.
Meanwhile I have a few other Debian things to straighten out....
Thanks everybody
cr
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