[comp.sys.mac.system] Hard disk dead

smedley@mizar.udel.edu (Trevor Smedley) (01/08/91)

Please Note:  Although the following problem looks like it was caused by
Stuffit, it may not be the case.  Before I ran stuffit as described
below, I had a bomb because I tried to launch an application requiring
the FPU which my machine doesn't have (IIsi).  I returned to the finder
using ES in MacsBug, and didn't reboot.  I suppose this could have
caused the problem, but I don't think so.  If I get me harsd disk back,
I may try to duplicate the problem, but I doubt it -- I don't think I
want to have to send the thing in for reparis twice in one week.

I've been using Stuffit 1.5.1 for ages to decompress files from the net
and elsewhere, and for the first time decided to use it for compressing
files.  I believe that it is "free" if all you do use decompress, and
you have to register to use it for compression.  Well, if this had
worked I would have registered, but now all I want to do is get my hard
disk back!  Here's the story:

I had compressed a bunch of directories into a single (roughly 3.5meg)
archive, and was in the process of segmenting this file onto 5 floppies.
While it was doing this it kept asking for me to insert the disk "stuff"
which is the name of my hard disk.  At this point I suppose I should
have rebooted, but I kept going, and through insterting a random
selection of the disks I was using, and pressing command-. enough times,
I got it to finish.  I selected Shutdown, and went for lunch.  When I
came back, the machine would not boot.  If I put in a system floppy and
wait long enough, eventually it boots off the floppy, but does not find
the hard drive.  Disk First Aid does nothing, and if I try to use HDSC
Setup, I get "Drive Selection Failed.  Unable to read required
infomation from the disk."

Can anyone guess what is causing this before I bring it in for repairs? 
How about suggestions on the possibility of recovering the data?  I have
tried every shareware/freeware thing I could find to remount it.

By the way, the drive sounds different than normal.  It sounds "slower."
It also sounds like it is speeding up and slowing down whenever I run
something that tries to mount it.  I don't know if this is what is
happenning, but that's what it sounds like.

Any help would be greatly appreciated.

Thanks, Trevor
smedley@udel.edu

gillisp@milton.u.washington.edu (Steven Gillispie) (01/09/91)

Have you tried resetting the boot blocks on your hard disk?
There are utilities out there that will do this, though I
can't give you any names right now.  Damaged boot blocks
can cause behavior something like what you describe.

smedley@mizar.udel.edu (Trevor Smedley) (01/09/91)

Thanks for the mail about the problem I was having.  Here is the status:

I picked up SUM II and it says that I have the following errors:

SCSI device descriptor sigs bad
No SCSI partition map for volume
SCSI mapping is bad

It tries to fix them, and claims to have completed the repairs, but the
problems are still there.

Does anyone know what might cause this or how to fix it?  I will be
taking it in to the dealer within the next day or two, but I'd like to
be able to at least get some files off of it first -- neither Norton
Utilities nor SUM II were able to recover any files.

By the way, SCSI Tools is able to figure out what type of hard disk it
is (Connor CP3040A 40mb).

Any help is greatly appreciated.

If it makes any difference, the machine is a IIsi/40mb with 5mb of ram. 
There are a few inits on the hard drive, but it has been running fine
with them for the past few months.  For a complete description of the
problem, see the original posting with this subject in comp.sys.mac.system.

Thanks, Trevor
smedley@udel.edu