{
  "fileFormatID": 1255,
  "formatName": "ISO 9660 Disk Image File",
  "version": null,
  "formatDescription": "ISO 9660 Disk Image File is a virtual image of optical disk, storing content and structure of an optical disc which can be transferred on the other media. This format specifically uses ISO 9660, a so-called original standard for file system for optical disc media, written by International Organization for Standardization (ISO) and considered an international technical standard available for many 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 the links attached to this entry for further information.",
  "releaseDate": null,
  "binaryFileFormat": null,
  "formatNote": "http://fileformats.archiveteam.org/wiki/ISO_image\r\n\r\nhttps://www.loc.gov/preservation/digital/formats/fdd/fdd000348.shtml\r\n\r\nhttps://en.wikipedia.org/wiki/Optical_disc_image\r\n\r\nhttps://docs.microsoft.com/en-us/windows/win32/imapi/disc-formats",
  "lastUpdatedDate": "15 Aug 2023",
  "formatProvenance": "08/2023 (v.113)- Max-offset modified for the BOF signature to allow for more exact signature identification. Internally researched.",
  "formatSourceDate": "25 Oct 2012",
  "formatDisclosure": null,
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Aggregate",
  "formatFamilies": null,
  "identifiers": [
    {
      "identifierText": "fmt/468",
      "identifierType": "PUID"
    }
  ],
  "internalSignatures": [
    {
      "signatureID": 730,
      "name": "ISO Disk Image File",
      "note": "BOF: CD001{1-16384}\u00ffCD001 with offset of (32700- 37700).\r\nBeginning at byte 32768, an ISO file will hold two-to-many volume descriptors, each of 2048 bytes and starting with '*CD001', where * represents the volume desciptor type as defined within the specification.",
      "byteSequences": [
        {
          "positionType": "Absolute from BOF",
          "offset": 32700,
          "maxOffset": 37700,
          "byteSequence": "4344303031{1-16384}FF4344303031",
          "endianness": null,
          "byteSequenceID": 919
        }
      ],
      "provenance": "08/2023 (v.113)- Max-offset modified for the BOF signature to allow for more exact signature identification. Internally researched."
    }
  ],
  "externalSignatures": [
    {
      "externalSignature": "iso",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "toast",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "cdr",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "dmg",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "bin",
      "signatureType": "File extension"
    }
  ],
  "relationships": [
    {
      "relationshipType": "Has lower priority than",
      "relatedFormatID": 1603,
      "relatedFormatName": "Encase Image File/Expert Witness Compression File",
      "relatedFormatPUID": "fmt/803"
    },
    {
      "relationshipType": "Has lower priority than",
      "relatedFormatID": 2585,
      "relatedFormatName": "UDF-ISO 9660 Bridge Disc",
      "relatedFormatPUID": "fmt/1739"
    },
    {
      "relationshipType": "Has lower priority than",
      "relatedFormatID": 2586,
      "relatedFormatName": "Apple Partition Map Disk Image",
      "relatedFormatPUID": "fmt/1740"
    },
    {
      "relationshipType": "Has lower priority than",
      "relatedFormatID": 2587,
      "relatedFormatName": "Apple Partition Map ISO 9660 Hybrid",
      "relatedFormatPUID": "fmt/1741"
    },
    {
      "relationshipType": "Has priority over",
      "relatedFormatID": 2589,
      "relatedFormatName": "Nero Burning ROM Image File",
      "relatedFormatPUID": "fmt/1743"
    },
    {
      "relationshipType": "Is subtype of",
      "relatedFormatID": 2584,
      "relatedFormatName": "UDF Disc Image",
      "relatedFormatPUID": "fmt/1738"
    }
  ],
  "submittedBy": [
    1
  ]
}