Universal Disk Format
<storage, standard> (UDF) A CD-ROM file system standard that is required
for DVD ROMs. UDF is the OSTA's 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.
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