Well, here's where things stand now:
I tried every possible MBR editor I could find in my arsenal here, but outside of making the primary partition of the HD active (where the d8b OS files are located) , I don't see anywhere else I could edit an MBR to point to the PME.sys file as the boot file. I keep getting the "No operating system installed" error every time I tried to start the d8b up.
OK... so there's no operating system installed. With nothing to lose but more time, I installed DOS 6.22 on the drive... which went in without any problems. However, when I take the install disks out of the floppy drive and restart the d8b, the machine posts, then it gets stuck on "Verifying DMI Pool Data."
Thinking that perhaps DOS doesn't like the BIOS settings, I reset the BIOS back to factory and tried booting again. No luck. So then I tried to take a look at the MBR that DOS may have created by connecting the HD to my IDE to USB adapter and viewing the drive on my laptop. There's no DOS directory ANYWHERE on the drive. I looked for a partition that the DOS install disks may have created but there's nothing there. I don't get it. Three floppies with DOS 6.22 on them and I watched them get installed but there's no trace of it anywhere on the HD.
I'm afraid that this is getting way beyond my pay grade now.
Aaron