I tried to upgrade from Fedora Core 3 to Fedora Core 4. The install went fine but after I rebooted the kernel panics immediately after the GRUB screen:
No volumes found
Unable to find volume group "VolGroup00"
ERROR: /bin/lvm exited abnormally with value 5! (pid 421)
mount: error 6 mounting ext3
ERROR: opening /dev/console!!!!: 2
error dup2'ing fd of 0 to 0
error dup2'ing fd of 0 to 1
error dup2'ing fd of 0 to 2
switchroot: mount failed: 22
Kernel panic - not syncing: Attempted to kill init!
Seems pretty drastic to me.. Any suggestions?