Two drives one partition

I have a windows 98 machine that is showing a drive C: and f:
The deal is that there is only one partition for sure.
And the contents of c and f are identical( changes made on c are also made on f) Initially I thought that maybe this was a mapped drive back to "c:" but it doesn't seem to be.
The output of "net use" is none. And it does not show as a mapped drive under My Computer.
fdisk shows only one primary partition without any additional partitions.
I need help on this please because I am trying to update a program that will not update because it thinks that there are two installation of this.
Is there a registry setting that I can check?

 

Uncompress

Thanks Steve and you are probably right. I am not at that machine right now but I need to be able to uncompress this and remove the "host" drive.
Do you remember how I do this?

 

http://www.sanpcguide.com/windows/win98_drivespace.html

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