Emax

I would have a tendency to think there is nothing wrong with the hard
drive, you say it was in storage for quite a while, so I would check
all the chips on the boards, especially the scsi and firmware chips,
and make sure they are all properly seated in thier sockets.(I would
even pull them out then put them back in so they "clean" the contacts)
A few years back I upgraded my EmaxSE rack with a hard drive and could
not get it to work at all until I took the scsi terminators off, then
last year I upgraded my friends EmaxSE keyboard with a hard drive, and
it only worked with the terminators on, so you might want to try it
either way, and see what works.
I would recommend making a new boot disk with the proper os on it,
instructions are on my website, www.dragonslair.ca ,boot your emax
with the new disk and reformat the hard drive.
Hopefully this will help.

Dave