John Finigan wrote: As far as I can tell that should work, asuming of course that the sled is ok. Does the firmware see the DAT drive if you put that in the sled ? Yep that's normally the way it works with most of the SGI machines, I would imagine that it effectivly extends the jumper pins onto the backplane, where they are linked by tracks.... Nope, just leave them disconnected. Humm the drive is known working I take it ? Do you have something else that you can try the drive + 50-80 pin converter in. Nope 9G should be fine for a machine of that age, We have one of the same machines stored at work, and I think that has a larger drive in. The really important thing to remember about SGI machines is that the contoler's SCSI ID is 0 and not the more conventional 7, this did seem to trip up a lot of people :) If you have an external SCSI box and apropreate cables you could try connecting the drive to the external SCSI port, and see if the drive can be seen there as this is a different physical interface (at least it is on the R4K and R10K indigo 2s). Can you post a log of a hinv from the serial console, as that might tell me if things look ok (and I may be able to compare it to the R8K at work). Cheers. Phill. -- Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric ! "You can twist perceptions, but reality won't budge" -- Rush.