| Universal Disk Format (UDF) A that is required for . UDF is a replacement for the file system used on CD-ROMs, but will be mostly used on DVD. DVD multimedia disks use UDF to contain and . To read DVDs you need a DVD drive, the 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 and recorders in mode. (1999-09-01) |