How To Disable a USB Flash Drive (Mass Storage Devices Only)

Whenever you insert a USB flash drive into your computer, the flash drive is detected automatically  by Windows and then opened. Here I am going to show you how to stop your USB Flash Drives Mass Storage Only through registry. 

Steps:

1.      Click Start Menu > go to run command and type "regedit" without quotes. Registry Editor will open.

2.      Expand the HKEY_LOCAL_MACHINE folder then SYSTEM >CURRENT CONTROLL SET > SERVICES >USBstor, located at the left pane.

 

3.      Find "Start" in the right pane with the blue icon.

 4.      Double click "Start". A box titled "Edit DWORD value" will open.

5.      Write down "4" in the "Value Data" Field.

6.      Click OK and then close the Registry Editor.

7.      To enable it again, repeat steps 1 through 4 and then change the value to 3. The default value for enabling a USB flash drive is 3.