I have a WD External HDD. Everytime it goes to sleep it disappears from my Finder in OSX and then I have to turn the power off on the HDD and turn the power back on for it to reappear in my OSX. It's rather annoying - in Windows it just stays there and you click on the icon and it will wake up. Is there any way to force OSX to search for the HDD or something and not delete it every time it goes to sleep? Thanks!!