Cannot install grub after upgrade to 12.10 (software RAID-1)

[jcauchy]

Dear All,

I just finished upgrade from 12.04 to 12.10. I have fake RAID 1. During the install I get a message that grub cannot install on /dev/dm-1 so I waited until the installation is finished and tried to install grub by hand. But I failed:

piglet:~$ sudo grub-install /dev/mapper/isw_ecjaadgfhh_Volume0p1
Path `/boot/grub' is not readable by GRUB on boot. Installation is impossible. Aborting.

After trying several more googled things I tried boot-repair, but it also failed starting from:

sudo dmraid -ay
RAID set "isw_ecjaadgfhh_Volume0" already active
ERROR: opening "/dev/mapper/isw_ecjaadgfhh_Volume0"

Here is boot-repair log.

So after finished 12.10 install, I still did not reboot the machine (without grub I am afraid to do so)

Anybody could help me?

Wojtek

[darkod]

First of all, /dev/mapper/... is fakeraid 8bios raid), not linux software raid.

I am not sure whether you can add grub2 right now since you didn't reboot it yet after the upgrade. I don't know how is the system mounted and whether everything is updated.

I suggest to reboot the machine, and if it doesn't boot without grub2 properly installed, boot it with a 12.10 live cd into live mode, open terminal and try adding grub2 to the MBR of the array with:

sudo mount /dev/mapper/isw_ecjaadgfhh_Volume0p1 /mnt
sudo grub-install --root-directory=/mnt /dev/mapper/isw_ecjaadgfhh_Volume0

That should install it to the array. Reboot without the cd and see if it boots.

[jcauchy]

First of all, /dev/mapper/... is fakeraid 8bios raid), not linux software raid.

Right. I corrected it in the original post.

I suggest to reboot the machine, and if it doesn't boot without grub2 properly installed, boot it with a 12.10 live cd into live mode, open terminal and try adding grub2 to the MBR of the array with:

sudo mount /dev/mapper/isw_ecjaadgfhh_Volume0p1 /mnt
sudo grub-install --root-directory=/mnt /dev/mapper/isw_ecjaadgfhh_Volume0

That should install it to the array. Reboot without the cd and see if it boots.

It worked! Thanks!