You'll find two kinds of recording capabilities in optical drives. Once data has been written to disk, it cannot be erased.
Rewritable drives use disks that can be written to over and over.
Most optical drives today are rewritable, and are more convenient for most storage uses. All Rights Reserved. Reproduction in whole or in part in any form or medium without express written permission of ZDNet is prohibited. Ziff-Davis Inc. All other trademarks are the property of their respective owners.