I have had to change the motherboard in a 7.3 system, and the new motherboard needs a different SATA driver (SATA_piix), consequently the system boots up, but gives a kernel panic.
I can get into "rescue" mode with the 7.3 install CD, and can also do an upgrade, but the resultant system still fails to boot up.
On boot I see a
ERROR: /bin/lvm exited abnormally! (pid 437)
and a little later, immediately before the kernel panic:
umount /initrd/dev failed:2
Anyone any good ideas before I trash the system and restore from backup?