I just had to replace my cd drive on an older Dell computer. I installed a cd dvd drive, the only drive available. It will read cd's and burn files but it will not allow me to reformat a rw cd. It tells me the device is locked out by another process. In addition most of the time pushing the button will not eject the disc but using the eject command in properties does work. Finally on occasion when I try to burn data to a cd it tells me to enter a valid directory. Very confusing. I apparently have the latest driver but I have an old Roxio cd program.