{
  "fileFormatID": 2586,
  "formatName": "Apple Partition Map Disk Image",
  "version": null,
  "formatDescription": "Apple Partition Map Disk Image is specific to describing the contents and structure of Apple Partition Map (APM) partition scheme, it can be thought of as a container format for multiple filesystem image files. It was developed by Apple in around 1988 with the introduction of Apple Partition Map scheme on Macintosh II, a scheme that defines how the data is organized on a singular disk. 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.",
  "releaseDate": null,
  "binaryFileFormat": null,
  "formatNote": "http://fileformats.archiveteam.org/wiki/Apple_Partition_Map\r\n\r\nhttps://mac-optimization.bestreviews.net/the-different-partition-format-types-on-mac/\r\n\r\nhttps://www.loc.gov/preservation/digital/formats/fdd/fdd000348.shtml\r\n\r\nhttps://en.wikipedia.org/wiki/Apple_Disk_Image\r\n\r\nhttps://docs.microsoft.com/en-us/windows/win32/imapi/disc-formats",
  "lastUpdatedDate": "17 Aug 2022",
  "formatProvenance": null,
  "formatSourceDate": "17 Aug 2022",
  "formatDisclosure": null,
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Aggregate",
  "formatFamilies": null,
  "identifiers": [
    {
      "identifierText": "fmt/1740",
      "identifierType": "PUID"
    }
  ],
  "internalSignatures": [
    {
      "signatureID": 2078,
      "name": "Apple Partition Map Disk Image, sig n.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",
      "byteSequences": [
        {
          "positionType": "Absolute from BOF",
          "offset": 0,
          "maxOffset": 0,
          "byteSequence": "{0-16}45520200{508}504D",
          "endianness": null,
          "byteSequenceID": 2406
        }
      ]
    },
    {
      "signatureID": 2079,
      "name": "Apple Partition Map Disk Image, sig n.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",
      "byteSequences": [
        {
          "positionType": "Absolute from BOF",
          "offset": 0,
          "maxOffset": 0,
          "byteSequence": "{0-16}45520800{2044}504D",
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          "byteSequenceID": 2407
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      ]
    },
    {
      "signatureID": 2088,
      "name": "Apple Partition Map Disk Image, sig n.3",
      "note": "BOF; Offset: 0; Magic Bytes: wildcard bytes between 0 to 16 bytes, followed by a set of null bytes, then an exact 508 wildcard bytes followed by 0x504D",
      "byteSequences": [
        {
          "positionType": "Absolute from BOF",
          "offset": 0,
          "maxOffset": 0,
          "byteSequence": "{0-16}00000000{508}504D",
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          "byteSequenceID": 2419
        }
      ]
    }
  ],
  "externalSignatures": [
    {
      "externalSignature": "toast",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "iso",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "cdr",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "dmg",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "bin",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "img",
      "signatureType": "File extension"
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      "relationshipType": "Has lower priority than",
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      "relatedFormatName": "Apple Disk Image",
      "relatedFormatPUID": "fmt/1071"
    },
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      "relationshipType": "Has lower priority than",
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      "relatedFormatName": "Apple Partition Map ISO 9660 Hybrid",
      "relatedFormatPUID": "fmt/1741"
    },
    {
      "relationshipType": "Has lower priority than",
      "relatedFormatID": 2605,
      "relatedFormatName": "Apple Partition Map - ISO 9660 - UDF Hybrid Disk Image",
      "relatedFormatPUID": "fmt/1757"
    },
    {
      "relationshipType": "Has priority over",
      "relatedFormatID": 1255,
      "relatedFormatName": "ISO 9660 Disk Image File",
      "relatedFormatPUID": "fmt/468"
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  "supportedBy": [
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  "developedBy": [
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  "submittedBy": [
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}