The term ISO Disk Image File Format is used to name a range of variants that are not governed by a single comprehensive specification. For organizations seeking to preserve content, ISO Disk Image Format Files support the important goal of bit preservation but not long-term content management. However, for playback or exploitation of the content, the dependencies on players (including CD and DVD players), operating systems, rights-related technical protection systems, and other software remain, just as they do for the original (or to-be-produced) physical disk. Thus it is a media-independent version of a media-dependent format. ISO image files contain the data contents of every written sector of an optical disc, including the optical disc file system if one is present.
ISO image files, unlike normal files, are not opened but rather are mounted. Some independent filmmakers distribute their works (which may contain interactive elements) as downloadable ISO disk images to be consumed as if they were DVDs.
For example, most distributions of the open-source Linux operating system are distributed as ISO images of the installation media.
The ISO Disk Image File Format is typically used to package or bundle software, databases, authored DVD video programs, and the like. UDF is used for computer data storage for a broad range of media, including DVDs and Blu-Ray disks, supplanting ISO 9660. Beginning in the 1990s, the term ISO Disk Image File Format (or simply ISO image) has also been applied to data structured in terms of the Universal Disk Format (UDF) specification developed and maintained by the Optical Storage Technology Association (OSTA), standardized as ISO/IEC 13346 (19) and ECMA-167 (1997). Archive file containing the content from (or destined for) an optical disk, originally limited to data formatted to comply with the ISO 9660 standard (1988), hence the format name and the iso file extension.
0 kommentar(er)
