To be clear, I tried fwb toolkit 4.5.2 the drive is not there. Scsiprobe 5.1.2 hangs , Lacie Silverlinging pro 6.1 doesn't see the drive, apple system profiler quits with a type 3 error when probing for devices, pc exchange doesn't see the drive. I have tried the my original drive in the same enclosure and it works. Its not a termination issue I don't think when I tested the drive in the mac it was fitted with pass-through terminator and when in the enclosure it provides active termination. So I am giving up on that drive unless someone else has any ideas.