Sorry for the delayed reply.
It seems to be a "drive access" problem.
In "all" cases, I have gotten rid of this sort of thing,
(if the drive was still working properly), by using
either the small IBM utility ZAP or WIPE.
(I even use it to start over on an XP install I did not "like"...)

It is from the "era" of your drive... (1996)
I would prefer you get it from the "Net" if you can...
I found it here, but did not get mine from there.
(I have No connection to or knowledge of this site.)
http://www.digitalissues.co.uk/html/os/misc/ibm-wipe-zap.html

                                 Rick Glazier

From: "James Asbury" > Purchased a used Dell with a 4GB drive.  Only has command.com on it.  Don't know what OS was on it before.  I
have Win95 and want
> to install.  Getting error SU0013.  I've deleted partions and reformatted several times.  Somehow, Win95 start up disk still
> thinks the drive is compressed.  Any ideas on how to get around this?

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