Kernel panic after upgrade

[Nils Kassube]

Mark Halegua wrote:
> [ 2.024321] Kernel panic - not syncing VFS: Unable to mount root fs
> on unknown - block(0,0)
>
> Never had to troubleshoot a kernel panic before.  Is this having
> trouble with grub, or is the menu.lst entry incorrect in some way? 
> The partition the root directory (and the subdirectory /boot) in hda5
> and the root entry for the vmlinux kernel in the menu.lst is (hd0,4)

To me it looks like grub can find the kernel and has started it. But the 
kernel can't find the root device. Maybe there is a problem with the 
kernel line in the grub menu. It should be something like this:

kernel /boot/vmlinuz-2.6.28-14-generic root=UUID=c8170ac2-
d4a1-4edb-82f5-83c9f7c86c7e ro quiet splash

If you don't have a UUID but something like "root=/dev/hda5" this may be 
the problem because it isn't guaranteed that disks always have the same 
device name (if you have more than one disk).


Nils