I have time machine running on my iMac OSX v10.5.8 and also have a Verbatim 1TB attached that I use as a workspace/scratchdisk so I can manipulate large music files before I transfer them.
However, when cleaning behind my computer the other day, I think I dislodged the connection (or maybe one of the kids hit the eject button, I don't know) however, I've re-booted many times and it's not reconnected.
It doesn't appear in my disc utility window and I don't know how to get the icon back! I've looked in time machine but it doesn't appear there at all (because it's not supposed to I think - it's not connected - my mate hooked it up for me and he won't return my calls!).