[comp.os.cpm] Kaypro 10 disk problem

mjtt@uhura.cc.rochester.edu (Mike Scott) (06/08/89)

I have a Kaypro 10 running CPM 2.2 and have been receiving occasional 'System
Status 02 - BDOS error'. I have run the CHECK program that came with the 
machine and have received the following errors on the hard disk:

Verify error drive 1 cyl 280 head 1 sector 11 (unc)  sdh=10101001
Verify error drive 1 cyl 303 head 3 sector 11 (unc)  sdh=10101011

CHECK will also report the  occasional correctable (cor) errors that clear
up the next time it is run, but these 2 always show up.  I have run FINDBAD
on the disk and it neither reports nor locks out any bad sectors.  

Does anyone know of a program I could get that would allow me the option of
selectively locking out bad sectors?  I would like to fix this without 
having to buy a new hard disk.  Any advice would be appreciated.

thanks in advance,

Mike Scott
University of Rochester
716 275-9127

doug@hisata.UUCP (Doug Allison) (06/14/89)

In article <2229@ur-cc.UUCP> mjtt@uhura.cc.rochester.edu (Mike Scott) writes:
>I have a Kaypro 10 running CPM 2.2 and have been receiving occasional 'System
>Status 02 - BDOS error'. 

My Kaypro 10 had similar problems, and CHECK showed tons of errors on
the A: drive.  Most of the errors were in the directory area, and eventually 
it wouldn't even boot from the HD.  I was sure I was in for a new drive, 
so after making sure I had a good back up (or 2), I ran FORMAT.COM, to 
reformat the entire drive.  I then ran PUTSYS and PUTOVL, and restored the 
backed up data.  Everything was fine.  Curiously this happened another time,
and I had to go through the same procedure.  No further problems, and the 
Kaypro has had about 4 years of fairly heavy use since then.  (I have my
fingers crossed, though.)  I don't know if this would help your problem,
but anything's worth a try.

Doug Allison
UUCP: {most backbones}!gatech!hisata!doug