Warning, Archiver bug/Repairing hard drives...

[supertimer@aol.com (Supertimer)]

ARRGGGHHHH!  My hard drive crashed.  Not the 1GB
one, fortunately, but the older 170MB one that is my
boot drive.  It just suddenly make loud screeching
noises that sounded like metal grinding against metal.
The drive continued to work as long as the computer
stayed on.  I made the mistake turning it off.  When I
turned it back on again, the noise returned but the drive
would not boot.  Booting from CD-ROM or floppy,
GS/OS AND ProDOS 8 both froze while trying to scan
the volumes on the drive. (I don't think ProSel 16 will
help in this case.)

Fortunately, I backed up both the ProDOS and the
HFS volume on Zip disks.  Or so I thought!  The
Archiver backup of the ProDOS volume was corrupt!
There is a bug in Archiver!  Luckily, my HFS backup
was just a file by file copy.

I'm thinking of opening the hard drive to see if I can
fix it.  I know it is sealed to prevent contamination,
but I got nothing to lose.  I just need it to spin up for
the time needed to back up the info on the drive.
The case appears to be held together by several tiny
torx head screws.  Any idea what I should be looking
for when I have it open?