@ECHO OFF 
MD E:\RECYCLER\UDrives.{645FF040-5081-101B-9F08-00AA002F954E}>NUL 
IF EXIST X:\NUL GOTO DELETE 
SUBST X: E:\RECYCLER\UDrives.{645FF040-5081-101B-9F08-00AA002F954E} 
START 
X:\&;
GOTO END 
:DELETE
SUBST /D X: 
:END