Name the storage device whose contents have to be erased completely everytime when a user wants to change or add some data.

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CD-RW (Compact Disc-Rewritable) is a storage device whose contents have to be completely erased everytime when a user wants to change or add some data.

A CD-RW can be written multiple number of times. The data burned on a CD-RW cannot be changed, but it can be erased.

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