What is the difference between CD-R and CD-RW?

CD-R blanks have a completely different coating than CD-RWs. On a CD-R 'bumps' are burnt into the coating. (That can be interpreted as a '0') CD-RWs have a cristalline coating that changes its appearance when it is 'hit' by the laser. The strength of the data (and also of the protection)is weaker on a CD-RW. That leads to the phenomenom that sometimes copies on a CD-RW can be used, while the same copy on a CD-R does not work.


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