Sometimes you might want to hide, for whatever reason, a hard drive, partition, storage device, etc from others. To hide system drives, you can use this program: Hide My Drives.
The Hide My Drives interface presents you with a small box for each of your drives, in which you can select between showing it, hiding it or deactivating its automatic running (Autorun). Only you will know the existence of the drives you wish to hide.
In addition to this, Hide My Drives lets you protect any hidden drive with a password. You can only access it with this password during a system administration session.