HOW TO HIDE  A DIRVE OF YOUR COMPUTER IN WINDOWS SYSTEM?
ANSWER IS :-
(1) FIRST OPEN YOUR COMMAND PROMPT WINDOW.
(2)THEN TYPE DISKPART IN THAT.
(3) THEN TYPE LIST VOLUME.(it will list all volume no of drive)
(4) THEN TYPE SELECT VOLUME  1( such as 1 is for d:  drive)
(5)THEN TYPE REMOVE.
IT WILL HIDE YOUR D: DRIVE.
TO BRING IT AGAIN REPEAT  (1) TO (4) AND TYPE ASSIGN INSTEAD OF REMOVE