grub2 problems
I have ubuntu server installed on sda and a rescue-ubuntu system on sdc1.

Grub2 could not find the partition with my rescue-ubuntu system on sdc1

i did not have any sil-raid in place.

only software raid0 for device /dev/sda and /dev/sdb

user@server3:~$ sudo update-grub
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.32-28-generic-pae
Found initrd image: /boot/initrd.img-2.6.32-28-generic-pae
Found memtest86+ image: /boot/memtest86+.bin
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
ERROR: sil: wrong # of devices in RAID set "sil_cbgaeagccabdh" [1/2] on /dev/sdc
done

user@server3:~$ sudo dmraid -rE /dev/sdc
ERROR: sil: writing sdc_3.dat[Bad address]
ERROR: sil: only 3/4 metadata areas found on /dev/sdc, electing...
Do you really want to erase "sil" ondisk metadata on /dev/sdc ? [y/n] :y
canoodle@server3:~$ sudo update-grub
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.32-28-generic-pae
Found initrd image: /boot/initrd.img-2.6.32-28-generic-pae
Found memtest86+ image: /boot/memtest86+.bin
Found Ubuntu 10.04.2 LTS (10.04) on /dev/sdc1
done
# after this grub2 SUCCESSFULLY AUTO DETECTED MY SECOND INSTALLED UBUNTU! THANKS GOD!
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