Brian,

The disk overlay program modifies your master boot record to allow it to
load the overlay program when you boot up.

When you format a hard drive, the master boot record is not modified.
That's why formatting didn't get rid of the overlay program.

If you want to get rid of the overlay, you can overwrite the master boot
record on your hard drive by typing:

FDISK /MBR

This should remove the overlay and allow you to format the drive normally.

Dave Souza

p.s.  Thanks Jim, I'm still new to the LISTSERVs.
-----Original Message-----
From: BryanTyson <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Tuesday, March 24, 1998 8:01 AM
Subject: [PCBUILD] Possible Disk Overlay Problem


>BACKGROUND
>
>I have a friend with a 486. The HD is something like 800 MB, so he uses
>OnTrack disk manager. While swapping out cards, installing drivers for new
>peripherals, etc., at some point something was corrupted and the system
quit
>working. I forget exactly what the symptoms were, but hopefully that is not
>essential to my question.
>
>Eventually he decided to format drive C and start over. He typed format c:
and
>then installed Win95, which proceeded normally. However, when restarting
the
>computer for the first time, he got "DDO integrity error. Reboot from
>diskette." When rebooting from the diskette it said something like "Win95
is
>not designed to work with DOS 6.x" (That I can understand, since he was
using
>an old floppy. I told him try your Win95 startup floppy and see what it
does.
>He is going to try that.) He formatted again, installed Win95 again, and
still
>got the DDO integrity error.
>
>QUESTION
>
>Is this DDO integrity error message related in some way to OnTrack? If so,
why
>didn't reformatting get rid of it? What needs to be done to allow the
computer
>to start normally? My friend would prefer to not use OnTrack, by the way,
even
>if it means not accessing the full capacity of the HD.
>
>Bryan S. Tyson
>Greenville SC
>