Mailing List Archive

Mike Diehl (Encrypted email preferred) wrote:
> Hi all.
>
> I'm trying to (finally) retire the 6Gb drive I'm using as my boot drive (hda).
>
[snip]
>
> My understanding is that I needed to get into the grub shell and type:
>
> root (hd1,0)
> setup (hd1)
> quit
>
> This should install grub onto hdb. Then when I move hdb into the hda
> position, it should just work, right? Maybe I mistyped something?
>
It might or might not (I'm not so deep within GRUB) that the stage1 file
which is installed into the bootsector of your hdb is told to load something
from the bootsector of the first partition on the _second_ drive.

I don't know if there's a way to fool GRUB into taking hd0,0 during install
and using another hd0 for running, so I'd rely on the more complicated way:
Replace hda with hdb, start from CD, chroot into your running system and
install GRUB with

root (hd0,0)
setup (hd0)
quit

Hope, this helps.
Greetings,
Felix

On Wed, 22 Sep 2004 08:47:22 +0200, Felix Tiede <lists@pc-tiede.de> wrote:
> Mike Diehl (Encrypted email preferred) wrote:
> > Hi all.
> >
> > I'm trying to (finally) retire the 6Gb drive I'm using as my boot drive (hda).
> >
> [snip]
> >
> > My understanding is that I needed to get into the grub shell and type:
> >
> > root (hd1,0)
> > setup (hd1)
> > quit
> >
> > This should install grub onto hdb. Then when I move hdb into the hda
> > position, it should just work, right? Maybe I mistyped something?
> >
> It might or might not (I'm not so deep within GRUB) that the stage1 file
> which is installed into the bootsector of your hdb is told to load something
> from the bootsector of the first partition on the _second_ drive.
>
> I don't know if there's a way to fool GRUB into taking hd0,0 during install
> and using another hd0 for running, so I'd rely on the more complicated way:
> Replace hda with hdb, start from CD, chroot into your running system and
> install GRUB with
>
> root (hd0,0)
> setup (hd0)
> quit
>

I don't believe you can do this in a single step. What I would do is this.

1. Edit the fstab on your new drive to work when cabled as hda.
2. Create a grub boot floppy
(1) format your floppy as ext2 or vfat
(2) mount the floppy and create /mnt/floppy/boot and /mnt/floppy/boot/grub
(3) copy the stage files from /boot/grub to /mnt/floppy/boot/grub
(4) edit a /mnt/floppy/boot/grub/grub.conf (or if you used vfat
this must be ....../menu.lst) with a boot stanza for your new drive as
hda? (hd0,?).
3. Move your drive to the hda position.
4. Boot from the floppy and select your new boot stanza
5. Once running from the new drive, redo the grub setup, i.e.
grub
root (hd0,?)
setup (hd0)
quit
6. Edit your /boot/grub/grub.conf or ....../menu.lst to look like the
version on the floppy

Of course, if you are using a /boot partition, make allowances for
mounting it and adjusting the grub stanzas accordingly.

HTH,


--
/\/\
(CR) Collins Richey
\/\/ "I hear you're single again." "Spouse 2.0 had fewer bugs than
Spouse 1.0, but the maintenance ... was too much for my OS."
- Glitch (tm)

--
gentoo-user@gentoo.org mailing list

Collins Richey wrote:
> On Wed, 22 Sep 2004 08:47:22 +0200, Felix Tiede <lists@pc-tiede.de> wrote:
>
[snip]
>>
>>I don't know if there's a way to fool GRUB into taking hd0,0 during install
>>and using another hd0 for running, so I'd rely on the more complicated way:
>>Replace hda with hdb, start from CD, chroot into your running system and
>>install GRUB with
>>
>>root (hd0,0)
>>setup (hd0)
>>quit
>>
>
>
> I don't believe you can do this in a single step. What I would do is this.
>
[snap]

Yes, I've left out the steps of editing /etc/fstab and grub.conf / menu.lst,
but I did it my way more than once (since I have no floppy drive in most of
my boxes I have no choice ;-) ) and it always worked fine.

Greetings,
Felix