On the main menu along the top, you need to get to Options (inside one of those), then along the side there are quite a few menus to choose from. While at work I cannot remember, but one of them asks for your drive. As a side note, I use 3 drives and in my menu only 2 are shown but the software finds them all eventually. it is pretty good s/w. The more you use it, the more you see how flexible it is. I have been using the Add to Playlist function quite a bit to keep building a compliation of the tracks that demo my system the best. You can do this while playing any track.