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Disable Access to USB Mass Storage Drive

Goto start > run > and type in regedit and press enter.
This will open registry editor window. Now go to the
following key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR
Right click on the key and select export and save a backup copy in case
anything goes wrong. Now on the right pan of the regedit window double
click on the value called Start & set it value to 4 & click OK.
When you need to use your USB mass storage drive just change the value of
Start to 3.
If you’re too lazy just copy & paste these codes into a notepad
file and save it with a .reg extension.
code for Disable access to the usb mass storage drive :
REGEDIT4
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR]
“Start”=dword:00000004
code for enable access to the usb mass storage drive :
REGEDIT4
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR]
“Start”=dword:00000003