CertiGuide to A+ (Core Hardware)  9  Chapter 0110:  Removable Media       9  IV  CD-ROM            9  CD-ROM Formats

CD Digital Audio (CD-DA) 1 CD-ROM Extended Architecture (CD-ROM XA)

This standard was created in 1985 by major manufacturers of CD-ROM technology and was later adopted by the International Standards Organization, who named it ISO 9660. It is commonly referred to as the High Sierra format because these representatives met at the High Sierra Hotel and Casino in Lake Tahoe, Nevada.

The standard defines two modes in which data can be stored on a CD. Mode 1 is the standard data storage method used by almost every data CD. It is very similar to the CD-DA format with some additional bytes used for error detection and correction code.

Mode 2 is the same as Mode 1, except that the error detection and correction code bytes are left out. This is a more flexible method for storing types of data that do not require a high level of integrity, such as graphics and video.

CD Digital Audio (CD-DA) 1 CD-ROM Extended Architecture (CD-ROM XA)