How to Prevent Access to Certain Drives

Want to block Access to certain Drives for Security reasons.Following steps need to be followed in order to block access to all or specific drives.

1.Click on the Start button and type Regedit and press Enter key .

2.Search or scroll down following Registry key:
HKEY_LOCAL_MACHINE \ SOFTWARE \ MICROSOFT \WINDOWS \CurrentVersion \Policies \Explorer

3.Click on the Explorer and in Right pane right click and create new Dword value and name it as NoViewNoDrive and set it value to the number of  drive that you want to block the access as per the below list

A:1, B:2, C:4, D:8, E:16, F:32, G:64, H: 128
ALL:67108863

You need to Restart your System.