One of my clients has an Iomega Ego Encrypt 320GB portable hard drive.
When used with Windows, the drive has software that grants/disables access to the (encrypted) contents of the drive.
The User's Manual for the device does not seem to even mention using it from Mac OS X, as I am doing.
I swear that the Quick Start Guide [PDF] said that on the Mac, you could reformat the drive using Disk Utility. When I look at it now, it does not mention the Mac. [Ah. Now I see. When you click to see the "Product Tour" it has a link to the quick start guide for the Iomega eGo, not the eGo Encrypt. Sigh.]
[Perhaps I was looking at the docs for a similar model, but not this exact one. Looking at the system requirements, it does show that it requires Windows 2000 or newer.]
When I do try to repartition it with Disk Utility, everything is greyed out. I was able to access it using Windows XP under Parallels Desktop for Mac, and after I did that, I appeared to be able to reformat the hard drive, but now it seems that the change didn't stick.
It looks like I'm out of luck, but is it possible to reformat this drive to be HFS+?