How do CD-RW work? I know how CD-Rs work, but I don't know how that information can be erased or altered for CD-RW. If anyone knows, please share.

(maybe this should go in Computer Talk, but people rarely go there so it might not be answered there)

Take a look at this. (http://electronics.howstuffworks.com/question655.htm)

That should answer your question.

Moved to Comp Talk.