System Administration Guide: Basic Administration

CD Media Commonly Used Terms

Commonly used terms when referring to CD media are:




CD read media that can be written once and after that, can only be read from. 


CD rewritable media that can be written to and erased. CD-RW media can only be read by CD-RW devices. 

ISO 9660 

ISO, an acronym for Industry Standards Organization, is an organization that sets standards computer storage formats. 

An ISO 9660 file system is a standard CD-ROM file system that enables you to read the same CD-ROM on any major computer platform. The standard, issued in 1988, was written by an industry group named High Sierra, named after the High Sierra Hotel in Nevada. Almost all computers with CD-ROM drives can read files from an ISO 9660 file system. 

Joliet extensions 

Rock Ridge extensions 

Adds WindowsTM file system information.

Adds UNIXTM file system information. (Rock Ridge is named after the town in Blazing Saddles.)

Note –

These extensions are not exclusive. You can specify both mkisofs -R and -j options for compatibility with both systems. (See mkisofs(1M) for details.)

MMC-compliant record 

Acronym for Multi Media Command, which means these recorder comply with a common command set. Programs that can write to one MMC-compliant recorder should be able to write to all others. 

Red Book CDDA 

Acronym for Compact Disc Digital Audio, which is an industry standard method for storing digital audio on compact discs. It is also known by the term “Red Book” format. The official industry specification calls for one or more audio files sampled in 16-bit stereo sound at a sampling rate of 44.1 kilohertz (kHz). 

Commonly used terms when working with the CD media are:




The process of erasing data from the CD-RW media. 


Command for making a ISO file system to write onto a CD. 


A complete track with lead-in and lead-out information. 


A complete data or audio unit.