Sony Dvd+rw Dw-d56a



Hey ya’ll i have a question

I have the following dvd rw drive (dw-d56a) and for some reason when i put my dvd-r cd in to the drive it turns from a reconding drive to a regular one… and an message saying you have to have data disc comes up… what am i donig wrong and why won’t it let me burn dvd’s