In computing, an Cassette to CD Recorder optical disc drive (ODD) is a disk drive that uses laser light or electromagnetic waves near the light spectrum as articulation of the process of construction and scribble data. It is a computer's peripheral device, that stores data on optical discs. Some drives can only read from discs, but commonly drives are both readers and recorders. Recorders are sometimes called burners or writers.

• Two main servomechanisms are used, the first only to maintain a correct distance between lens and disc, and ensure the laser beam is focused on a immature laser spot on the disc

• The second servo moves a head along the disc's radius, improper the beam on a groove, a continuous spiral data path.