[comp.sys.ibm.pc] AT disk or controller problems?

burton@parcvax.Xerox.COM (Philip M. Burton) (08/23/87)

Recently I did a low-level reformat of my hard disk so I could clean up 
everything at once.  (This may or may not be coincidental.)  My system is
a 6 MHz IBM PC AT with a Maxtor 1140, running 4 partitions.  This has worked
fine for many months.  

I recently ran into some random problems installing software, so I did the
low level format, which indicated only the known bad spots, etc.

However, at various times, mostly while copying a whole floppy of software,
I get the dreaded error message above.  Each time I have done the following
with complete success:

1)  Power cycle the machine.

2)  Reboot.  The autoexec.bat file is executed with lots of retries by the
disk controller, indicating it has trouble reading the disk.

3)  Run norton utilities DT to check all sectors and all files on my C partition.

4) Everything is OK.

5) Pick up where I left off, and reload the files from the floppy, when the
whole thing started.

Does anybody on the net have any ideas?

Please post rather than send mail, because my system's mailer is flaky and I
may not be able to reply via mail.

Thanks in advance


-- 
Philip Burton
Xerox Corporation    408 737 4635
 ... usual disclaimers apply ...

agollum@engr.uky.edu (David Herron aka Admiral Gollum) (08/27/87)

Our AT developed this once.  After running several hours it would 
get errors on certain sectors.  One of the boot sectors had this problem,
so rebooting was a bit of a crapshoot.  Finally we took it back to the
dealer, who ran it for several hours, then ran mace when it started 
showing symptoms.  Mace locked out several clusters and everything 
was fine.
Except occasionally I'd still have problems booting.  I finally used
Mace again to rewrite the boot track and the problem went away for good.

If your system develops problems after running a while, boot off a floppy
if you have to, but run your disk-checker *when the disk gives you
problems*, not after letting it rest/cool down.  Mace always reported
the disk fine when it had been allowed to cool down; the bad sectors
only appeared after prolonged use.  And don't be afraid to mark off
60 or 80k worth of space, if it's no good it's no good.

Kenneth Herron