Connect your USB HDD and the PC will recognize the driver (For example: Driver E and Driver F)
Go to registry, HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices
You will find some Value named as “\DosDevices\E:” and “\DosDevices\F:”
Renamed them, (For example, you want to force Driver E to Driver P, rename “\DosDevices\E:” to “\DosDevices\P:”)
Disconnect your USB HDD and reconnect, you will find your Driver E become to Driver P and it has forced to Driver P