After two days of trying ---- > My system is win 10 pro . I'm trying to install windows 7 to go on a USB stick with rufus and cant because they have a removable attribute . One is a san disk cruzer force wich is ( I think ) USB 2 . The other is a san disk ultra wich is USB 3 . The message i get is in the screne shot . Looked in google and found lexar_usb_tool ...... but it wont work on either . And i cant find anything to do it on the san disk web site . Other than that i found nothing . The strange thing is that windows 10 to go works on both USB sticks . Anyone any experience with this problem ? Any advice ?