>   I tried 2.0RC5 GENERIC kernel on dual Opteron machine, and found a
> problem with SATA drives.  The motherboard was RioWorks HDAMC.  I also
> tried GENERIC.MP kernel and got same problem.  Attached is the console
> messages from GENERIC kernel.
> 
>   i386 kernel runs fine with SATA drives on the same motherboard.

Well, that's strange. I recall testing an onboard SiI3114 on the amd64
port, and it seemed to work fine.

Can you send the bootmessages for both an i386 and an amd64 kernel,
with MPVERBOSE enabled? I'd just like to see if they are any different
from eachother.

- Frank