Is the problem you can't see the drive or that it shows up but you are afraid to remove it because you can't see the icon?

The icon itself is sort of a joke ... you can just turn it off or unplug it and nothing bad will happen.

If you can't see it.. then just keep trying. Some of the less quality EHD enclosures sometimes do this... I had one that I had to turn off/on about 10 times before it was recongnized... I have another that always hits on first try.. guess which one was the cheap one?!

Good luck!