We recently upgraded 5.5u6 machine to 5.6u but had the following problems
Installation completed --> with no errors messages
Emergency disk built --> with no error messages
Reboot --> kernel panic
Boot from Floppy --> Kernel panic
Used a emergency disk from a clean 5.6u install --> booted
Found
The emergency disk, from the upgrade, had no initrd.img file.
the /boot directory had no initrd-2.4.18-5.img file
lilo.conf was incomplete
Copied the initrd.img from the working floppy to /boot and renamed
Corrected the lilo.conf
issued lilo command
rebooted fine
Is there a problem in the post-upgrade scripts or a technique that can be applied at the end of the upgrade but before the reboot to check and correct errors?
Many Thanks