[Ubuntu] Root will not mount after Upgrade

[rsteinmetz70112]

I upgraded my 10.04 LTS Server to 12.04 after the upgrade the root filesystem will not mount properly. It is part of a raid array with lvm and a reiser file system. I get an error messages that the disk is damaged but If I boot a rescue disk and run fsck on it it checks out clean.

on boot I get and error

"disk drive for / not ready or not present"

If I drop in the recover shell I get and error

"root filesystem check failed"

The root filesystem is mounted read only and other file systems are not mounted.

[rsteinmetz70112]

I've solved it.

In the recovery shell

# mount -0 remount, rw /
# mount -a
Check to see that everything is mounted correctly. There is a tendancy to create nee MD devices and give them numbers beginning with 127.

# dpkg --configure -a
# reboot
I could boot. I still had a few dependencies to clean up.