How to hide Hard drives

1.open run dialog box
2.type diskpart
3.now 1 window will open
4.type list volume then hit enter
5.type select volume 0 (write no as show in the list of hard drive )
6.now hit enter & write select letter d(write letter of your drive.here d is for D drive)
7.then hit enter & type remove d(write letter of your drive.here d is for D drive)
then hit enter..now your hard drive is hidden
..To show it again
do all the process again only little bit change in 7th step.type "assign" insted of "remove"