The CD has to be CD-RW to be able to delete whats on the disk and add something new.
You cannot clear a CD once it has been completed only read and activated. Wait, no, there is one way: you must destroy the CD and it will then be clear.
Indefinitely ! The information on a CD is digitally burned into the foil layer - which is encased in clear plastic. The laser reads through the clear layer to the foil layer. So long as the clear layer is relatively scratch-free (no deep gouges damaging the foil layer) the CD will play !
i burned the CD
The most obvious reason is because you burned the CD incorrectly.
Yes, as CD-R's can just be burned once, while CD-RW's can be burned multiple times. They are he same thing.
A burned CD into a blank disc by erasing it using a CD-RW drive and the appropriate software. This only applies to rewritable CDs.
Compact Discs which have been made in a CD burner have the information stored on them differently than a standard CD, and many disc players cannot read the format of burned CD's.
A CD has a certain amount of memory and is blank until something is loaded or burned on it. When a program or file is burned on the CD, the CD no longer acts as a memory space but as a readable file. Every time that disc gets put in another computer, it will be read for the file that was burned on it.
It depends on the CD's format, how it was burned, and whether the session is still open or not. If it is a CD-RW(Read/Write) you can erase these and re-write data on them. If you are trying to erase a store bought CD or a CD-R or CD+R you are out of luck, once these are burned they are done.
i burned a CD using windows media player, but can't play it on another player
how to clear cd-rw discs & dvd-rw discs..?
No. An ISO image can be burned to a CD-R, CD-RW, or even writable DVDs (DVD-R, DVD+R, DVD-RW, DVD+RW).
Only if it's labeled CD-RW or CD+RW