Zip 100 Problems on IBM PC

[offensive_Jerk]

Try using the palmzip driver, I believe the actual Iomega driver requires a 286 or newer. Using Compaq DOS 3.30 should allow you to use all 100 MB of the Zip drive, rather than 30 or so MB.

I think I have heard of people running it on a v20, but I don't have one so never tried.
Pretty sure palmzip can see all 100mb but it takes forever to calc the free space after a dir, so it's faster if you use the utilities to partition it.