Prevent users from writing to USB drives

Useful trick if u have something on your computer and you don't want being copied by someone in a USB

Click on start-->Run type regedit

Expand to the following:

HKEY_LOCAL_MACHINE-->System-->CurrentControlSet001-->Control Add a new key and name it "StorageDevicePolicies".

In the window on the right then create a new DWORD value and label it WriteProtect, give it a value of "1" and users can no longer write to USB drives.

Changing the value to "0" will allow to users to write again.