How to Hide Drive

step #1: Navigate to Start > Run and type "cmd" and hot "Enter".

                               step #2: Type "DISKPART" and hit "Enter" .

                              

                               step #3: Type "List Volume" and hit "Enter".

                             step #4: Now type "select volume #" to select your volume number respective to     your drive letter.(# refers to number)

step #5: After selecting your desired volume just hide it by using this command "remove letter #".(# refers to drive letter)

That's it, you had successfully hided your drive from unauthorized access. If you wish to have your drive back simply repeat the process but in step #5 just replace "remove" with "assign" i.e "assign letter #"(# refers to drive letter)