After today's update Nov. 22, 2011 Ubuntu option disappear from grub 11.10 on my dual partition.
some of fdisk -l:
Device Boot System /dev/sda1 * HPFS/NTFS/exFAT /dev/sda2 Extended /dev/sda5 Linux /dev/sda6 Linux swap / Solaris Device Boot ID System /dev/sdb1 * c W95 FAT32 (LBA)
I also ran this:
grub-probe -t device /boot/grub
to see where the grub was got this error:
grub-probe: error: cannot find a device for /boot/grub (is /dev mounted?).
did this too:
got the same error: /usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?).
I also tried to boot repair Gui but it only shows MBR option and no grub. when I turn the computer on I get:
No such file: grub rescue>
Any help would be much appreciated.
Edit: I also mounted the linux partition:
sudo mount /dev/sda5 /mnt mount: /dev/sda5 already mounted or /mnt busy mount: according to mtab, /dev/sda5 is already mounted on /mnt
and ran the above commands and got the same errors as above.
Also did as tohuwawohu instructed:
umount /mnt sudo fsck -p /dev/sda5 fsck from util-linux 2.19.1 /dev/sda5: clean,
Thanks again. Any Help would be awesome.