[comp.sys.mac.hardware] why did drive die and how recover?

ireland@ac.dal.ca (12/10/90)

My Jasmine 70 (with 3 SilverLining partitions) was connected at the end of
a friends SCSI chain a couple of days ago. It included a IIx with an internal
Quantum 80, a CD ROM player, and my Jasmine 70. We had some difficulty getting
the CD ROM player and my Jasmine to mount even thought we had terminators in
the proper places. When we tried a shorter cable between the CD ROM player
and my Jasmine, the CD ROM player booted and an alert came up saying that
my drive was damaged and offered to initialize it. What happened? I can't
mount the drive now. Disk First Aid says its not an HFS volume. Silverlining
only recognizes 1 of the 3 partitions (which was the boot partition) and
won't let me update the driver saying the the drive has a bad master directory.
I had SUM installed and tried all of its volume and file recovery tricks, of
which only the volume scan worked. Volume scan identified about 1/2 of the
files on the drive, but many of them are nameless (ie Word #2) and many
others have corrupted file type and creator tags, so it will be a lot of
work to figure out what has been salvaged. I'd appreciate any information
on what happened, how to avoid this in the future, and suggestions for
alternate recovery methods. Is it possible that Norton Utilities can do a
better job of salvaging files on my drive?   Thanks

Keith Conover  ireland@ac.dal.ca