After I've install RHEL4 AS (which is having 2.6.9-5 kernel version), I immediately run up2date so it download all package (about more than 1 thousand files including latest kernel: 2.6.9-55.0.2) and the update completed overnight. The next day when i booted my computer, I have new option in my grub menu so I selected the 2.6.9-55.0.2 ELsmp x86_64 and within 30 seconds, the kernel panic! The error message i received are:
Mounting root filesystem
mount: error 6 mounting ext3
mount: error 2 mounting none
Switching to new root
switchroot: mount failed: 22
umount /initrd/dev failed: 2
kernel panic - not syncing: Attempted to kill init!
I'm not sure what is the correct way to update to latest kernel but I assume using up2date under this will act like "WIndows update" which will update what ever are relevant? Another question is when I run up2date for the 1st time, will I need to update Errata as well? If yes, is it mean I need to download all Errata from Redhat network and manually update it myself? Sorry, I'm kind of new in RH AS.