INSERT UR PENDRIVE IN YOUR COMPUTER (OR) LAPTOP WHICH YOU WANT TO BE PROTECTED WITH PASSWORD
CLOSE ALL YOUR TABS ORELSE IT MAY CONFUSE YOU....
NOW GO TO MY COMPUTER
START -> MYCOMPUTER
NOW YOUR PENDRIVE WILL BE FOUND IN MY COMPUTER
RIGHT CLICK ON IT.. YOU WILL FIND A LIST
IN THAT SELECT TURN ON BIT LOCKER.
THERE SELECT USE A PASSWORD TO UNLOCK
THERE TYPE YOUR PASSWORD THEN CLICK NEXT
THERE YOU WILL FIND THE TEXT THATHOW DO YOU WANT TO STORE THE RECOVERY KEY
THERE YOU WANT TO SELECT SAVE THE RECOVERY TO A FILE THEN CLICK NEXT.
THEN IN THAT NEW DIALOGUE BOG CLICK ON THAT START ENCRPTING.
AFTER COMPLETION OF THIS PROCESS YOUR PENDRIVE WILL BE KEPT PROTECTED WITH YOUR PASSWORD