Universal Disk Format

(UDF) A {CD-ROM} {file system} {standard}

that is required for {DVD ROMs}. UDF is a replacement for the

{ISO 9660} file system used on CD-ROMs, but will be mostly

used on DVD. DVD multimedia disks use UDF to contain {MPEG}

{audio} and {video} {streams}.

To read DVDs you need a DVD drive, the {kernel} driver for the

drive, MPEG video support, and a UDF driver. DVDs containing

both UDF filesystems and ISO 9660 filesystems can be read

without UDF support.

UDF can also be used by {CD-R} and {CD-RW} recorders in

{packet writing} mode.

(1999-09-01)