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ISO/IEC 13490

ISO/IEC 13490-1:1995 Information technology — Volume and file structure of read-only and write-once compact disk media for information interchange — Part 1: General

The ISO/IEC 13490-1:1995 standard establishes the volume and file structure of read-only and write-once compact disk media for information interchange. This standard is important because it ensures that data can be exchanged between different computer systems without loss or corruption.

ISO/IEC 13490-1:1995 Information technology — Volume and file structure of read-only and write-once compact disk media for information interchange — Part 1: General

The international standard ISO/IEC 13490-1:1995(E) defines the volume and file structure of read-only and write-once compact disk media for information interchange.

This standard was developed by the Joint Technical Committee 1 of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC).

The purpose of this standard is to promote the interoperability of compact discs by defining a common format for the storage of data on these discs.

The standard defines two types of disc structures:

The ISO 9660 file system, which is used for read-only discs; and
The Rock Ridge file system, which is used for write-once discs.

Both of these file systems are based on the hierarchical directory structure of Unix-like operating systems.

The ISO 9660 file system is the most common format used for compact discs. It is supported by all major operating systems, including Windows, macOS, and Linux.

The Rock Ridge file system is less common, but it offers some advantages over ISO 9660, such as support for longer filenames and symbolic links.

ISO/IEC 13490-2:1995 Information technology — Volume and file structure of read-only and write-once compact disk media for information interchange — Part 2: Volume and file structure

The ISO/IEC standard 13490-2:1995 defines the volume and file structure of read-only and write-once compact disk media for information interchange.

The standard was developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC).

The standard specifies the physical format of the disk, the file system, and the directory structure.

It also defines the logical blocks that make up a CD-ROM, CD-R, or CD-RW.

The standard is divided into two parts: Part 1: General and Part 2: Volume and file structure.

Part 1 of the standard defines the general principles of the volume and file structure.

Part 2 of the standard defines the specifics of the volume and file structure for CD-ROM, CD-R, and CD-RW media.

Benefits of ISO 13490

Compact disks (CDs) are popular for storing and exchanging information. They are also used to store data that is read-only or write-once.

The benefits of ISO 13490 include:

Reduced storage space requirements
Reduced CD production costs
Increased data security

ISO 13490 specifies the format for compact disk media and the file structure that should be used. This ensures that data is stored correctly and easily accessed by computers.

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