A buddy of mine gave me a disc that he burned on a newer g5 mac, a dual layer disc, full of photos of a recent trip. But my powerbook, (1.33ghz 12"), wont open the disc, just spits it out. I know that its a dvd-r burner on the powerbook, but I thought that once the disc is made, that it could play on any media drive. The disc does work, it was tested on his and another mac, both having dual layer burners in them. Thats the only thing I can think of as to why it wont work on my machine. Is that correct though, my mac can't read dual layer discs?