ECMA-119 Standard Volume and File Structure of CD-ROM for Information Interchange, 6th Edition, December 2025

The ECMA International’s 130th General Assembly held in Geneva on 10 December 2025 approved the 6th edition of ECMA-119 Standard concerning volume and file structure of CD-ROM for information interchange.

This Standard specifies the volume and file structure of compact disc read-only memory (CD-ROM) for the interchange of information between users of information processing systems.

This Standard specifies:

• the attributes of the volume and the descriptors recorded on it;
• the relationship among volumes of a volume set;
• the placement of the files;
• the attributes of the files;
• record structures intended for use in the input or output data streams of an application program when such data streams are required to be organized as sets of records;
• three nested levels of medium interchange;
• two nested levels of implementation;
• requirements for the processes which are provided within information processing systems, to enable information to be interchanged between different systems, utilizing recorded CD-ROM as the medium of interchange; for this purpose, this Ecma Standard specifies the functions to be provided within systems which are intended to originate or receive CD-ROM which conform to this Ecma Standard.