Debugging kernel panic on boot.

[Simon Andrews]

Timothy Murphy wrote:
> Simon Andrews wrote:
> 
>> Since the release of the 2.6.22-x kernels one of our servers has failed
>> to boot.  Something seems to be going wrong in the loading of the
>> modules which allow it to mount the root partition and it dies very
>> early on in the boot.  Going back to a 2.6.21 kernel makes everything
>> work OK again.
> 
> Might be worth trying the current 2.6.22 kernel (2.6.22.1-41, IIRC).
> There seemed to be something wrong with 2.6.22.1-33 
> (lots of people complained), I think maybe with udev .

Already tried that, but no change on this machine.  Still won't boot. 
It's something very early on, possibly a change in the ata_piix driver?

Simon.