error on fixed disk

[Bob Beaulieu]

My hard drive (seagate 4096) on xenix 2.3.2 will report error messages
every so often (sometime more than not). The error message:

error on fixed disk ctrl=0 dev=1/40 block=4940 cmd=0020 status=5910
sector=76287 cyl/head=498/5

Sometimes this can go on for a few minutes (2-3) causing a virtual
standstill on my system. The controller is MFM and BIOS is AMI on a
Clone 386 25Mhz with 4meg RAM. I have tried the following:

1. Running badtrk, (which detects bad tracks - different ones each
   time?), in the quick and slow modes. Identifying the bad tracks
   and addding them to the table.

2. Modified the parameters of the disk as follows:
   old way --> cyl           1024         changes:
               heads           9
               write cyl       0
               write precomp 65535  -----------------> 0
               ecc             0
               control         8
               landing zone  1024
               sectors        17
   This initially stopped the problem. But the problem has risen from
   the dead.

3. Reinstalled the root file system from a bootable rootable floppy
   system using: restor fr /dev/rct0 /dev/hd/0root.

4. Seagate say there is nothing wrong with the drive and that its a
   cmos or communications problem with my hardware. (I have the drive
   partitioned and the DOS portion - 33mb is working great). They
   mentioned my precomp should be 0.

Does anyone have any idea as to what the $#@% is going on?

Thanks for any help or suggestions.

Bob B.
-- 






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o                   Bob Beaulieu 277-b Tyrella Avenue                   o
o                        Mountain View, CA 94043                        o
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