Well, for starters remove any other devices like CD drives that're connected to the HD controllers on the motherboard while you're testing this. Is this drive you've set as slave connected to the same ribbon cable as a drive set as master?
Yes, same ribbon cable. It is set to auto-detect.
The one I'm using now (XP) at first wouldn't show up at all if both were connected...
Then I switched the jumper to "slave", and since if both are connected it will attempt to boot from CD if that's in the boot order... or it will hang up on "Push F10"
I've monkeyed with the boot order with no luck.
(You do mean disconnect ribbon from CD drive while testing, correct?)