Yesterday I downloaded the 10.10 update using the update manager. The download went normally, but I encountered numerous errors while the new packages were installing, which caused my upgrade to fail. I restarted my computer, and after the BIOS screen I began to consistently get the following error:
Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) Pid: 1, comm: swapper Not tainted 2.6.35-22-generic #33-Ubuntu
and then there is a 10 entry call trace.
I've been searching for a solution since this happened last night. Some forums recommended running a disk test, which I did from the live cd with no errors. I also tested the memory, and that showed a lot of errors (62). So maybe my RAM is toast, but I don't know why it would fail on the upgrade.
I also ran the boot info script found on sourceforge, and the RESULTS.TXT file is here: http://pastebin.com/MKc2tS9e
Thanks for the help.