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Universal Disk Format (UDF) is an open, vendor-neutral file system for computer data storage for a broad range of media. In practice, it has been most widely used for DVDs and newer optical disc formats, supplanting ISO 9660 .
ISO 13490 was created to allow adding more files to a writeable disc such as CD-R in multiple sessions. The ISO 13346/ECMA-167 standard was designed in conjunction to the ISO 13490 standard. This new format addresses most of the shortcomings of ISO 9660, and a subset of it evolved into the Universal Disk Format (UDF), which was adopted for DVDs ...
Universal Disk Format, an operating-system-independent file system commonly used on DVD and other digital media; Uniqueness Database File, a Windows XP Professional configuration text file; User-defined function, a function provided by the user of a program or environment
Optical-disc images are uncompressed and do not use a particular container format; they are a sector-by-sector copy of the data on an optical disc, stored inside a binary file. Other than ISO 9660 media, an ISO image might also contain a UDF (ISO/IEC 13346) file system (commonly used by DVDs and Blu-ray Discs ), including the data in its files ...
Universal Disk Format (UDF) is a newer filesystem that comes with additional features such as Unicode support, packet writing (UDF 1.50), and defect management on rewritable formats. Packet writing can alternatively be implemented with UDF 1.02 and Mount Rainier extensions.
1.5 Disk image format support. 1.6 Standards support. 1.7 User interface. 2 See also. 3 Notes. Toggle the table of contents. ... UDF MRW; Disk image format support
The HD DVD format, promoted by Toshiba, was backed by the DVD Forum, which voted to make it the official successor to DVD. Opposing HD DVD was the Blu-ray format, led by the Blu-ray Disc Association, which shares many members with the DVD forum. With HD DVD launched in March 2006 and Blu-ray launched in June of the same year, a format war started.
The web site of the association provides the full digital specification books of each revision of the Universal Disc Format (UDF) starting at 1.02, as well as other whitepapers and information pages related to optical data storage. Besides the UDF specifications, differences between the revisions of the specifications can be obtained.