[..]
 JM> A Hardware problem corrupted the partition table on my
harddrive. 
 JM> I am now unable to access my OS/2 partition or boot OS/2
from my
 JM> harddrive.
 
PH> You will have to re-create the partition table with a
hexeditor or DiscDocter
PH> e.g. Then the first sector of the HPFS partitions MUST
contain a valid HPFS
PH> bootblock (check partition data here again).
 
PH> Had to do this twice, partitions still running.
 
Patrick,
 
Thanks to you and the others who responded to my cry for help.
I did do just what you suggested.  I used Norton (Dos) Diskedit
to change the partition table and restore the HPFS "boot record"
sector... the sector that has the volume serial number and the
disk geometry and OEM ID: OS2 20.0 etc.  On my drive that whole
sector had been set to hex "F6".
 
I used info from the corresponding sector on my OS/2 setup
at work as a starting point and adjusted for the known
differences in Harddrive geometry.
 
It was suggested that a virus had done the dirtywork, but I think
not.  The machine would not even successfully boot from a floppy
until I cleaned the contacts on the disk drive controller card. 
I had been getting "hangs" at various places in the startup
sequence including the BootManager screen, along with corrupted
video and garbled and partial screens.
 
Jeeze, I guess I've been spoiled by years of trouble free
harddrive operation.  I haven't had to "hack" and restore the
control blocks of a disk drive since the early '80's when the
skill to do that was nearly a daily necessity with the
unreliable Commodore 1541 floppy drives.
 
Once I got the boot record sector back in shape, Chkdsk took over
and ran a *LONG* time and reported *LOTS* of errors corrected.
 
Everything is OK now as far as I can tell.
 
Thanks again.  I have made a record of the partition info in case
I ever have a reoccurrence.

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