The last couple of years I blogged about my EIII at http://dvdborn.blogspot.com. I'll now post these blog posts here on the forum so that other users can contribute to them.Some time ago the internal Hard Drive decided it was time to meet its maker. It was still the original 40MB from 1987. The EIII needs its internal HD to operate. You can boot the machine with a OS floppy disk but the OS still requires a HD to be present on the internal SCSI cable.
Googling for a replacement drive only the Seagate ST51080N is mentioned on EIII related pages and forums. A 1GB SCSI drive that is still being sold for $225.
So I started going through all my spare SCSI drives and here's a list of EIII compatible HD's:
Quantum Trailblazer
IBM WDS-L80 (80MB) - As found in the Apple II si
Quantum ProDrive LT 700MB SCSI - As found in the PowerMac PPC6100
Quantum Maverick ProDrive - As found in PowerMac PPC8500
To format the HD I used the standard interleave setting of 2:1.
It took about 2 hours to get the Quantum Maverick HD formatted and verified. It is essential that you don't abort the verification process (like I did at first). When you do so, you won't be able to copy the OS onto the HD. If you try so, you'll get the Error: "Bank does not exists!".
I also tried more recent SCSI Hard Disk models but they don't get recognized by the EIII. If anyone knows why please let me know.
Attached is a picture of the internal HD.