OK, heres the whole sorry tale…
My Hard drive has suddenly shrunk, not quite disappeared but shrunk. I had just installed OS 10.2 on it and the updaters. Then when I restarted the boot into X went wromg and left me with a grey apple and mussed up video. Wanting to getback to OS 9 I turned off the mac and unplugged the Drive with 10 on it from my 8500.
When I plugged it back in it didn't turn up on the desktop.
So I looked in Apple System profilerand this is what I saw...
(BTW I have rectified the ID problem, the jumper came off)
The drive is a IBM 4Gb SCSI drivemanufactured to Apple Specifications.
It seems to spin up OK and I can hear the head moving around inside and then giving a very fast double click when power is removed.
The computer is aPowermac 8500 with a XLR8 G3 upgrade card inside and I was using XPostFacto 2.2.2 to install OS X.
Thanks in advance,