I was able to solve my problem by reinstalling grub2 to the raid device. Booting from a live cd in 10.10 shows the device partition as ...ARRAY01, while under 11.04 the same partition is ARRAY0p1.
Also, /etc/default/grub was missing after the upgrade, and it seemed an old grub was installed.
This information was important when following the chroot instructions here: http://ubuntuforums.org/showthread.php?t=1581099 After reinstalling grub 2 I was able to boot, and clean up the incorrect entries for the root and swap partitions in /etc/fstab.
I was able to solve my problem by reinstalling grub2 to the raid device. Booting from a live cd in 10.10 shows the device partition as ...ARRAY01, while under 11.04 the same partition is ARRAY0p1.
Also, /etc/default/grub was missing after the upgrade, and it seemed an old grub was installed.
This information was important when following the chroot instructions here: http:// ubuntuforums. org/showthread. php?t=1581099 After reinstalling grub 2 I was able to boot, and clean up the incorrect entries for the root and swap partitions in /etc/fstab.