dvd rw drive has 0 bytes

[Regine_2]

I am having trouble with trying to download my sims 3 game to my hp desktop computer, for some odd reason my dvd rw drive says 0 bytes free and 0 bytes available. Im confused where did the space go? Please help.

 

[CountMike]

Space didn't go anywhere, either disk is dead/corrupted or empty.