Do you have the ZIP drive connected?
If so, are any lights on (on the drive, WITHOUT a disk inserted into it)?
What happens when you insert a ZIP disk?
Does it spin up? (even if it doesn't mount on the desktop)
Answer these questions -- ALL of them.
Then we can go forward...
I followed the above instructions - the Iomega drive does NOT appear in the sidebar.Connect the ZIP drive and put a disk into it. Let it spin up, even if it doesn't mount on the desktop.
Open disk utility.
VERY IMPORTANT: In the view menu, choose "show all devices".
Can you see the ZIP drive "on the left" now?
Mine was the parallel port version and I'd forgotten all about it, but I can remember the very night I bought it at one the big box computer stores. It lived on top of my ridiculously tall Gateway 2000 tower case."How are people hooking them up to a newer Mac ?"
Via USB, of course...
(later ZIPs did come with a USB connector)