Here is an easy manual tutorial on how to lock and hide hard-drives.
Follow these steps below:


1. open Registry (go to run command, type "regedit" and press enter)

2. then go to this key
HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Policies\Explorer

3. now click right button and create DWORD Value (blue color)

4. Rename it as "NoViewOnDrive" (for locking drive)
or
Rename it as "NoDrives" (for Hiding drive)

5. double click it and put some numbers to lock ur desired Drive and click ok.

6. Here is Drive No.
A: 1
C: 4
D: 8
E: 16
F: 32
G: 64
H: 128

7. finally restart or log-off the computer to take effect.

Keep in mind that "0" is Default Value or Disable or remove this setting.