I have just upgraded an Ubuntu desktop 8.10 to 10.04
The drive configuration is a single drive with the O/S, and two pairs of disks on software RAID1.
When I reboot the server, I get error messages on startup telling me that /dev/md0 and /dev/md1 are inaccessible; I have to skip mounting them in order to proceed. However, if I use Syetem -> Administration -> Disk Utility once I have logged in, I can see the drives and if I tear down the two RAID devices and bring them back up again they both come back healthy.
The problem only seems to be bringing them online on startup. Any suggestions?