USB Devices Enable/Disable(Win XP)

I posted a trick titled "Write Protected Pen Drive(Windows XP)" in month of July. Well it is not foolproof but there is another trick from which you can easily disable USB devices. It prevents to use all USB devices.

Go to Registry Editor and find "Start" dword value under following registry hive.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR

... then set "Start" value 4(Hexadecimal) for Disable and 3(Hexadecimal) for Enable all USB devices.

OR

Type following text in notepad or copy-paste same and save it with .reg extension then run/merge it.

• For Disable USB
  

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR]
"Start"=dword:00000004

• For Enable USB
  

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR]
"Start"=dword:00000003