On Apr 23, 5:15 am, schmidtd <schmi...@my-deja.com> wrote: > Sorry, forgot to mention that too. I tried different Disk ]['s in the > same computer, all exhibited the same behavior. Put those Disk ]['s > back on a working Apple, and they work fine. It really seems to be > tied to this particular motherboard. Now that is strange. Did you try running the drives in different slots?