answered question 9/4/2009 Vista Won't Format My DVD RW Disks: Says It Cannot Format Them, And Doesn't Give Me The Option To Choose Mastered Format. Any Suggestions? To use dvd's like floppies- drag and drop files- you need "drive letter access (DLA) add on which is available for windows xp but not for vista. ROXIO has a program that will do what you want, but it is not compatible with vista