Set USB to Read Only

Learned this one in a Forensic class. Place in a *.REG file and double click. To make the drive writable again, change the 1 to a 0 and double click.

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies]
"WriteProtect"=dword:00000001