--
I agree it doesn't sound as though it should be hardware-related, but:
I added a 9 GB SCSI drive to my Starmax 5000 (like a PM4400, sorta)
using an adapter to convert the drive's wide SCSI to the machines
50-pin SCSI. Put OS 9.1 on that drive, but kept the 9.1 on the
"native" IDE drive as the start-up. Computer and peripherals ran
fine. Could write to and read from the SCSI drive. Could start up
from it. But!! trying to wake from sleep or to restart led to a
gray-screen hard hang, no matter what start-up OS was selected before
sleep or restart attempt. Had to unplug the beast to recover.
Removed all the extensions, control panels, and whatever which were
installed when the OS was installed on the new drive. Used DiskTop to
find any invisible stuff added at the same time and trashed that.
Problem remained, Erased the new disk ("erase", not low-level
reformat) -- still gray screen problems. (Of course I had long since
told the energy saver to shut down instead of sleeping.)
Opened up the machine. Removed the new drive entirely. Now all is
well. Infrequent hangs like before the "improvement", sleep and
restart work as advertised, and the old girl is back.
--
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