out of the blue, one day I cannot boot into ubuntu, help needed!

[Christopher J Combrink]

lots..

but an easy reach-around would be to do a recovery installation. (same
menu as your live CD Grub)

On Wed, 2008-12-10 at 21:16 +0000, Shuanghe wrote:
> Hi all,
> 
> I had Ubuntu 8.10 install on my PC and it work well until a couple of
> day ago I suddenly couldn't boot to ubuntu (hadn't done anything
> special before the accident except entering windows for a couple of
> hours game). 
> 
> here's my config of 2-hard disk PC, sda and sdb
> 
> 1st disk: 
> 
> sda1, 50GB, windows XP (for games)
> sda2, ext2, 250MB as /boot
> the rest of the 1st disk use LVM
> sda3 extended, sda5 LVM as /
> 
> grub was installed in MBR
> 
> 2nd disk:
> 
> sdb5 LVM, used as data backup
> 
> when the power buttoned was pushed I can see grub menu and i can boot
> into windows for games, however, I couldn't boot ubuntu. 
> 
> now I'm use Ubuntu 8.10 live CD and tried to mount these 2 disks for
> data backup but couldn't. well, I can mount sda1 and sda2 but it
> didn't help since my data is somewhere else.
> 
> root at ubuntu:/home/ubuntu# mount /dev/sda5
> mount: can't find /dev/sda5 in /etc/fstab or /etc/mtab
> root at ubuntu:/home/ubuntu# mount /dev/sda5 /home/ubuntu/mount/sda5/
> mount: unknown filesystem type 'LVM2_member'
> root at ubuntu:/home/ubuntu# 
> 
> any thing I can do to save my precious data? many thanks!
> 
> (If more information is needed, can you guys tell me the command and I
> can paste the output. I'm a command newbie. :-0)
> 
>