Well, your not making this any easier, boy, gotta be something.....
2 things I would do, have ya tried moving the drive on the cable, to another connector.
and last have you, gone in your SCSI BIOS and check settings for the ID # you set for that drive, could be something in BIOS that is not letting this work. ctrl+a gets ya in SCSI BIOS upon detection of card at boot up.