What exactly does that jumper from the Apollo to the motherboard SCSI controller connect?
Most 3rd party SCSI controllers added via the CPU slot will require a small motherboard modification due to one of the required interrupt lines not being connected to the A3000D CPU slot.
Details here:
http://amiga.serveftp.net/MiscFiles/A3000-INT_2-Modification.LHAAs for using the motherboard SCSI controller, I fitted a 9Gb SCSI2 Seagate Barracuda drive to my A3000 a couple of days ago, and found the Fast Synchronous and SCSI-2 queing modes needed to be enabled for the drive to operate on the controller.
This can be set using one of the many programs from Aminet like SetBatt or SCSIprefsMUI.
