Xpostfacto & installing Panther on upgraded PPC 7300 w/G3 Sonnet card

Question

I have a 7300 upgraded w/Sonnet G3 card and an extra SCSI disk - IBM. This 2nd disk is 8/9 GB and appears not to have ability to set SCSI address so I am stuck w/0. Fine. It also might be slow on the spinup steering the Mac hardware to prefer the Quantum.
I am trying to install Panther (I bought a set of eMac installation cd's) via Xpostfacto 4.0. When I try to select the IBM disk for OSX installation (Primary is a Quantum 4 GB w/OS 9.1 where Xpostfacto is located), it remains 'grayed-out'. Only the Quantum is available for installation by Xpostfacto. The IBM disk is initialized to HPF+ - however, I have not caused any OS9 drivers to be deposited upon it during initialization (something I ran across in the recent postings - last 90 days - on the subject. Is it important to put drivers on the 2nd disk?).
Why is the IBM disk unsuitable for installation by Xpostfacto? Should I try an older version (3.1)? Must I install any drivers on the IBM drive, now partitioned into two 4GB partitions?
Also, if I went ahead with the installation on the Quantum (OS 9.1 is not important to me) would it replace OS 9.1 or merely add it to the Quantum, making other problems?
Alternately, if I could successfully install 9.1 on the IBM disk, would that clear up the problem to Xpostfacto allowing me to install 10.3.3 on the Quantum?

Answer 1

What model SCSI drive is the IBM? Is it an Apple labeled IBM Model DNES-309170? If so, that's an LVD/SE SCSI drive, which requires better termination than the drive-based termination found on the Quantum drive. When you run it in SE mode, you must terminate the SCSI ribbon cable with an active SCSI terminator on the last connector. To do this, you'll need to rearrange the two hard drives in your 7300's drive bay assembly. Move the Quantum drive down to the lower bay (requires a different plastic sled), and install the IBM drive in the upper bay. Additionally, every SCSI drive should have the capability to assign a distinct address, or you'd have configuration headaches with the SCSI chain. If you turn over the drive, you should see a sticker(s) detailing the jumper settings. For the LVD/SE IBM drive I've mentioned, you need to enable SE mode, by placement of a jumper across pins 6. Since you need to disable drive termination on the Quantum (when set up as I've described), take that jumper and place it across the pins labeled 0 (if you haven't done so already). As you may know, this sets its SCSI address to 1. The IBM drive can remained unchanged with its default address setting of 0, assuming that it hasn't been changed.
If you have the 9 GB SCSI-2 IBM drive, then follow my suggestions about address settings - leave the IBM at 0 and change the Quantum's address to 1. Disregard the mention of a jumper for SE mode. You will need to place a jumper across the pins designated for TE (termination enable). There may be a separate jumper block on the IBM drive with a jumper positioned to provide Term Power. That should be left alone, but it's not the same as TE. The jumper setting for TE should be located on the same block as the address pins.