Differences between installer kernel and installed kernel

[David Chisnall <theraven sucs org>]

As with Test 2, the install CD boots fine in VirtualPC 6 and installs.  
Once it has installed, it gets as far as saying Ok, booting the kernel 
before crashing.  Can anyone suggest what might be different between 
the kernel used by the installer, and the one that is installed that 
might cause this (and ideally how to disable whatever it is)?

P.S.  Core 1 runs fine in VirtualPC.