Format
AppleDouble Resource Fork
Summary
- Name
- AppleDouble Resource Fork
- Version
- 2
- Identifiers
-
- PUID: fmt/503
- MIME: multipart/appledouble
- Description
- The resource fork is a construct of the Mac OS operating system used to store structured data in a file, alongside unstructured data stored within the data fork. The format specification is available here: http://support.apple.com/kb/TA32537?viewlocale=en_US The format lacks an extension, and is instead represented by a file name consisting of ._<filename resource fork belongs to>
- Source
- Digital Preservation Department / The National Archives
- Developed by
- Apple Computer, Inc.
- Supported by
- Apple Computer, Inc.
Internal signatures
Apple Double Resource Fork (v2)
- Note
- BOF: "…….." 4 byte AppleDouble Magic Number, then 4 byte version number
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 196
- Byte Sequence
0005160700020000- Endianness
- None
Changelog
-
Updated in V88
- Release date
- 27 September 2016
AppleDouble Resource Fork 2: Added version number 2 assisted by research by by Archives New Zealand.
-
Updated in V86
- Release date
- 27 July 2016
AppleDouble Resource Fork: Added MIME type.
-
Added in V67
- Release date
- 26 February 2013
AppleDouble Resource Fork: Signature developed through PRONOM Research.
AppleDouble Resource Fork: Outline Entry Added.