>I assume this message occurs after you type in your settings and click ok.
>Thus, you probably used the first group of settings.  I needed to use the
>second settings:
>
>Sector Size: 512
>Sectors/Track:40
>Tracks/Cylinder:512
>Num Cylinders:2046
>File System Size:145230

I believe mkfs ignored your settings for Num_Cylinders and File System 
Size. These come from the Partition Map Entry of the disk partition it's 
about to initialize.  The ZIP doesn't report Sectors_Track or 
Tracks_Cylinder though, so these will need to be entered.

-bob