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Compact Disc is still the de facto standard for audio recordings, although its place for other multimedia recordings and optical data storage has largely been superseded by DVD. DVD (initially an acronym of "Digital Video Disc", then backronymed as "Digital Versatile Disc" and officially just "DVD") was the mass market successor to CD. DVD was ...
One of the first products to be made available to the public on CD-ROM was the Grolier Academic Encyclopedia, presented at the Microsoft CD-ROM Conference in March 1986. [ 9 ] CD-ROMs began being used in home video game consoles starting with the PC Engine CD-ROM 2 (TurboGrafx-CD) in 1988, while CD-ROM drives had also become available for home ...
PlayStation 2 (CD-ROM, DVD-ROM) A map file that contains all of the exact positions and file size info of the disc is stored at a position that is beyond the file limit. The game calls this place directly so that burned copy with no data beyond file limit cannot be played. PSP (Universal Media Disc)
A sector is the primary data structure on a CD-ROM accessible to external software (including the OS). On a Mode-1 CD-ROM, each sector contains 2048 bytes of user-data (content) and 304 bytes of structural information. Among other things, the structural information consists of the sector number, the sector's relative and absolute logical position
Optical storage can range from a single drive reading a single CD-ROM to multiple drives reading multiple discs such as an optical jukebox. Single CDs (compact discs) can hold around 700 MB and optical jukeboxes can hold much more. Single-layer DVDs can hold 4.7 GB, while dual-layered can hold 8.5 GB.
The system area, the first 32,768 data bytes of the disc (16 sectors of 2,048 bytes each), is unused by ISO 9660 and therefore available for other uses. [17] While it is suggested that they are reserved for use by bootable media , [ 18 ] a CD-ROM may contain an alternative file system descriptor in this area, and it is often used by hybrid CDs ...
The Compact Disc specification (as defined in the Red Book) was originally intended for storing digital audio, but mainstream applications for optical disc storage have since expanded to other uses as well. One such extension, the Yellow Book, defines the CD-ROM specification -- a standardized method of storing arbitrary digital data in a CD ...