Hi, I want to know if it is possible to install windows from an usb key even if i have to boot from a CD-Rom. I means my Ua XPCD content is on the usb key and a special cd boot and run the setup from the key. And if it is compatible will it be compatible with oem installation RunOnceEx and some integrated driver wich are integrated witch BTS driver pack (the method with setup replacement) Thanks in advance.