Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Heh, that would be a nice way to hide your files. Have it not mount at startup, and when you want to access it, mount it through a terminal command. 🙂

(Sorry I don't know how to do it either)
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.