Editing Optical disc (section)

==Recordable and writable optical discs==
{{Main|Optical disc recording technologies}}
There are numerous formats of optical [[direct to disk recording]] devices on the market, all of which are based on using a laser to change the [[reflectivity]] of the [[digital recording]] medium in order to duplicate the effects of the pits and lands created when a commercial optical disc is pressed. Formats such as [[CD-R]] and [[DVD-R]] are "[[Write once read many]]" or write-once, while [[CD-RW]] and [[DVD-RW]] are rewritable, more like a [[magnetic recording]] [[hard disk drive]] (HDD).

Media technologies vary, for example, [[M-DISC]] media uses a rock-like layer to retain data for longer than conventional recordable media. While being read-only compatible with existing DVD and Blu-ray drives, M-DISC media can only be written to using a stronger laser specifically made for this purpose, which is built into fewer optical drive models.