USB Disabling

Step 1.

Edit the permission of the file,

[c:\windows\inf\usbstor.pnf]  and  [c:\windows\inf\usbstor.inf]

Deny for All users

Step 2.

Start - Run - Regedit - HKLM - System - Current Contrl Set - services - usbstor

Edit the value START-4 ( For disabling)