

ISO 9660 is a standard published by the International Organization for Standardization (ISO), defines a file system for CD-ROM media. The name "ISO" is taken from the ISO 9660 file system used with CD-ROM media.

ISO but Mac OS X ISO images often have the extension.

ISO image files typically have a file extension of. ISO image is an unattached file format (like RAR and ZIP): it merges a series of files into one single file according to a definite format. disk image) of an optical disc using a conventional ISO (International Organization for Standardization) format that is supported by many software vendors.
