Format
Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image
Summary
- Name
- Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image
- Identifiers
- PUID: fmt/1757
- Format type
- Aggregate
- Description
- Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image, describes the contents and structure of optical disc media of Apple Partition Map (APM) partition scheme with ISO9660 and Universal Disk Format (UDF) file systems attached. Since all three schemes reside on the same optical disc this is most likely to be on DVD media type of file. APM partition scheme can be thought of as a container format for multiple file system image files, and in this entry together UDF file system developed for optical media by the Optical Storage Technology Association (OSTA) and ISO 9660 International Organization for Standardization (ISO), the hybrid system acts as a support for all three schemes and allows for disc to be rendered on various operating systems. A disk image is a uncompressed copy of the contents of a disk or a folder, it can facilitate certain types of backup and recovery strategies. Please see ID: fdd000348 from Library of Congress and other links attached to this entry for further information.
- Note
- http://fileformats.archiveteam.org/wiki/Apple_Partition_Map https://www.loc.gov/preservation/digital/formats/fdd/fdd000348.shtml https://en.wikipedia.org/wiki/Apple_Disk_Image https://en.wikipedia.org/wiki/Optical_disc_image https://en.wikipedia.org/wiki/ISO_9660 http://fileformats.archiveteam.org/wiki/Universal_Disk_Format
- File extensions
-
iso,toast,dmg - Source
- The Church of Jesus Christ of Latter-Day Saints / The Church of Jesus Christ of Latter-Day Saints
Relationships
- Has priority over
Internal signatures
Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image sig.1
- Note
- BOF; Offset: 0; Magic Bytes: wildcard bytes between 0 to 16 bytes, followed by 0x45520200, an exact 508 wildcard bytes followed by 0x504D BOF; Offset: 32768; Max Offset: 103236; Magic Bytes: 0x4344303031, then wildcard bytes between 1 to 16384, followed by 0xFF4344303031 BOF; Offset: 32768; Max Offset: 69632; Magic Bytes: 0x00424541303101, then an exact of 2041 wildcard bytes, followed by 0x004E535230, then either 0x32 or 33 followed by 0x01
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
{0-16}45520200{508}504D- Endianness
- None
- Min Frag Length
- Absolute from BOF
- Offset
- 32768
- Max offset
- 103236
- Byte Sequence
4344303031{1-16384}FF4344303031- Endianness
- None
- Min Frag Length
- Absolute from BOF
- Offset
- 32768
- Max offset
- 69632
- Byte Sequence
00424541303101{2041}004E535230(32|33)01- Endianness
- None
Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image sig.2
- Note
- BOF; Offset: 0; Magic Bytes: wildcard bytes between 0 to 16 bytes, followed by 0x45520800, an exact 2044 wildcard bytes followed by 0x504D BOF; Offset: 32768; Max Offset: 103236; Magic Bytes: 0x4344303031, then wildcard bytes between 1 to 16384, followed by 0xFF4344303031 BOF; Offset: 32768; Max Offset: 69632; Magic Bytes: 0x00424541303101, then an exact of 2041 wildcard bytes, followed by 0x004E535230, then either 0x32 or 33 followed by 0x01
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
{0-16}45520800{2044}504D- Endianness
- None
- Min Frag Length
- Absolute from BOF
- Offset
- 32768
- Max offset
- 103236
- Byte Sequence
4344303031{1-16384}FF4344303031- Endianness
- None
- Min Frag Length
- Absolute from BOF
- Offset
- 32768
- Max offset
- 69632
- Byte Sequence
00424541303101{2041}004E535230(32|33)01- Endianness
- None
Changelog
-
Added in V108
- Release date
- 5 September 2022
Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image: Signature researched and samples provided by The Church of Jesus Christ of Latter-day Saints.
Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image: Full entry added. Submitted by The Church of Jesus Christ of Latter-day Saints.