Optical Drives

An optical drive is a storage device that uses lasers to read data on the types of optical drives exist:

■ Digital versatile disc (DVD)

CD and DVD media can be prerecorded (read-only), recordable (write able (read and write multiple times). CDs have a data storage capacity 700 MB. DVDs have a data storage capacity of approximately 8.5 GB disc.

Several types of optical media exist:

■ CD-ROM is CD read-only memory media that is prerecorded.

■ CD-R is CD recordable media that can be recorded once.

■ CD-RW is CD rewritable media that can be recorded, erased, and rerecorded.

■ DVD-ROM is DVD read-only memory media that is prerecorded.

■ DVD-RAM is DVD random-access memory media that can be recorded, erased, and rerecorded.

■ DVD+/-R is DVD recordable media that can be recorded once.

■ DVD+/-RW is DVD rewritable media that can be recorded, erased, and rerecorded.

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