[K12OSN] restore backup with chroot + grub-install
Robert Arkiletian
robark at telus.net
Sat Dec 11 06:14:39 UTC 2004
Robert Arkiletian wrote:
> I backed up our RH9 server today using tar to save both / and /home
> partitions to a mobile drive. Wondering if I can use a different
> version of grub to restore once I untar to the new drive. I'm thinking
> "chroot /sbin/grub-install". (Not sure of syntax for chroot and
> grub-install). Can someone explain it. Do I use grub on gnoppix or
> the untared RH9 that I'm restoring? Also booting with gnoppix, grub is
> version .95 and in RH9 it's 0.93. Does it matter if the version of
> grub is different? BTW the server has / on /dev/sda1 and the backup
> drive with the tar files is /dev/hdb3 which I would mount from gnoppix
> as /mnt/hdb3
>
After some reading I'm going to take a guess. After I
1) fdisk the brand new drive to the same parameters as before and
2) then mke2fs -j the filesystem.
3) Then mount it (/dev/sda1) from gnoppix as /mnt/sda1
4) then untar my backup from mobile drive to the new drive
5) then chroot /mnt/sda1 /sbin/grub-install /dev/sda
6) then umount /dev/sda
Line number 5 is the one I want confirmation on.
Robert
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