Integer overflow in drive capacity

Integer overflow in drive capacity

[Frank Cox]

I remember that there used to be a TSR that would hide most of the space on a
large hard drive so programs that checked for free space with a
single-precision variable and the like won't overflow and say that there is
insufficient free space.

I have run various search strings through Google off and on trying to find
this, and had no luck at all to date.

First, does anyone know where to find that TSR?

Second, would the capability to hide free disk space from DOS programs be a
good thing to add to DOSEMU natively, triggered by some sort of optional
directive?

-- 
MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com

Re: Integer overflow in drive capacity

[Clarence Dang]

On Sunday 03 June 2007 12:30, Frank Cox wrote:
> I remember that there used to be a TSR that would hide most of the space on
> a large hard drive so programs that checked for free space with a
> single-precision variable and the like won't overflow and say that there is
> insufficient free space.

Sorry, I don't know the answer to that one.

> Second, would the capability to hide free disk space from DOS programs be a
> good thing to add to DOSEMU natively, triggered by some sort of optional
> directive?

Probably.

You can also get around the problem by storing your files on a loopback 
filesystem of an appropriate size (see the "losetup" command).