Discs problem

Users questions: Not used discs, used space = 0, free space = 0 This is the Editor? (I use windows to see) a CD-R discs. In addition, I have a CD-RW discs (read-write it should be), but can not afford to burn a photo later deleted. Read-only file is not deleted.
Experts answer:CD-R disc problem may be bad right. CD-RW problem, you had a moment after which the files can only be erased with software (such as using nero), to the inside of the file (photo) deleted.
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