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Universal Disk Format

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. Due to its design, it is very well suited to incremental updates on both write-once and re-writable optical media. UDF was…

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Allowed filename characters
Any 16-bit Unicode Code point excluding U+FEFF and U+FFFE
Attributes
Various
Date range
24:00:00.000, 1 January 1 (UTC) – 23:59:59.999, 31 December 9999 (UTC)
Date resolution
Microsecond
Dates recorded
creation, archive, modification (mtime), attribute modification (ctime), access (atime)
Developer(s)
ISO/IEC, Ecma International, OSTA

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Map overview Semantic statistics

Universal Disk Format

Nodes67
Edges66
Triples40
Avg. degree1.97
Density0.029851
Components1

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Universal Disk Format

Top relations

Allowed filename characters · 1
Universal Disk Format → Any 16-bit Unicode Code point excluding U+FEFF and U+FFFE
Attributes · 1
Universal Disk Format → Various
Date range · 1
Universal Disk Format → 24:00:00.000, 1 January 1 (UTC) – 23:59:59.999, 31 December 9999 (UTC)
Date resolution · 1
Universal Disk Format → Microsecond
Dates recorded · 1
Universal Disk Format → creation, archive, modification (mtime), attribute modification (ctime), access (atime)
Developer(s) · 1
Universal Disk Format → ISO/IEC, Ecma International, OSTA
File system permissions · 1
Universal Disk Format → POSIX
Forks · 1
Universal Disk Format → Yes
Full name · 1
Universal Disk Format → Universal Disk Format
Introduced · 1
Universal Disk Format → 1995; 31 years ago (1995)

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Important terminology

udf media file system revision format used disc files optical vat write read iso writing disk support storage build may

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Universal Disk FormatAllowed filename charactersAny 16-bit Unicode Code point excluding U+FEFF and U+FFFE1.00infobox
Universal Disk FormatAttributesVarious1.00infobox
Universal Disk FormatDate range24:00:00.000, 1 January 1 (UTC) – 23:59:59.999, 31 December 9999 (UTC)1.00infobox
Universal Disk FormatDate resolutionMicrosecond1.00infobox
Universal Disk FormatDates recordedcreation, archive, modification (mtime), attribute modification (ctime), access (atime)1.00infobox
Universal Disk FormatDeveloper(s)ISO/IEC, Ecma International, OSTA1.00infobox
Universal Disk FormatFile system permissionsPOSIX1.00infobox
Universal Disk FormatForksYes1.00infobox
Universal Disk FormatFull nameUniversal Disk Format1.00infobox
Universal Disk FormatIntroduced1995; 31 years ago (1995)1.00infobox
Universal Disk FormatMax file size16 EiB1.00infobox
Universal Disk FormatMax filename length255 bytes (path 1023 bytes[b])1.00infobox
Universal Disk FormatMax volume size2 TiB (with 512-byte sectors), 8 TiB (with 2 KiB sectors, like most optical discs), 16 TiB (with 4 KiB sectors)[a]1.00infobox
Universal Disk FormatPartition IDsNot assigned but suggested: .mw-parser-output .monospaced{font-family:monospace,monospace}0x07 (MBR) EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (GPT)1.00infobox
Universal Disk FormatSupported operating systemsVarious1.00infobox
Universal Disk FormatTransparent compressionNo1.00infobox
Universal Disk Formatis aprofile of the specifications known as ISO/IEC 13346 and ECMA-1670.90text

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