Hide your drive in window 7 without cmd

1.first right click to computer icon on your desktop.

2.click to manage.

3.click on disk management.

4.right click on the partition you want to hide.

5.click on change drive letters and path.

6.click on remove.and press yes in pop up window.

for again display it
press right  click to partition and press add button and add the displayed letter.