Not sure if you got an answer to this but...

Iomega does have a web page where all the details required are stored.  I
used them to format my Zip for a NetBSD bootable....

The URL is:  http://www.iomage.com


See ya,

Ian

>        Apple's disk formatting utillity and APS Power Tools 3.something
>are too simplistic.  Using APS Power Tools 2.7.something that I got from
>the A/UX archive at Nasa I formated the Zip disk for A/UX version 3.
>Then I had it install APS drivers and not the Iomega ones.  I think its
>going to work plenty fine with MacBSD its just that I'm clueless about
>how to set up unix systems and the like.  I have a friend coming over
>tommorrow (he's a FreeBSD fanatic), I think together we'll get the Zip
>drive working.
>
>        I'd like to use the Zip disk for XWindows, that way I can use
>it for things like TCL (Tool Command Language not THINK Class Lib),
>Interviews, and Fresco.  Especially a TCL tool called tgdb.
>
>        Take care,
>
>The bearded Tubist, son of Ginger and Harry, Aaron Rosenzweig.
>http://www.wam.umd.edu/~recurve/