{
 "id": "apple-partition-map",
 "name": "Apple Partition Map",
 "category": "filesystem",
 "identifiers": {
  "extensions": [
   "iso",
   "dmg",
   "cdr",
   "toast",
   "bin",
   "img"
  ],
  "puid": [
   "fmt/1740"
  ],
  "wikidata": [
   "Q113866096"
  ],
  "signatures": [
   {
    "name": "Apple Partition Map Disk Image, sig n.1",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "{0-16}45520200{508}504d"
     }
    ]
   },
   {
    "name": "Apple Partition Map Disk Image, sig n.2",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "{0-16}45520800{2044}504d"
     }
    ]
   },
   {
    "name": "Apple Partition Map Disk Image, sig n.3",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "{0-16}00000000{508}504d"
     }
    ]
   }
  ],
  "priority_over": [
   "fmt/468"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "4552",
    "notes": "File Formats Wiki"
   }
  ]
 },
 "status": "unknown",
 "summary": "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.",
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/Apple_Partition_Map",
   "kind": "wiki"
  },
  {
   "name": "PRONOM fmt/1740",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/1740",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q113866096",
   "url": "https://www.wikidata.org/wiki/Q113866096",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "ffw",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "aliases": [],
 "structure": [],
 "parsers": [
  {
   "engine": "kaitai",
   "url": "https://github.com/kaitai-io/kaitai_struct_formats/blob/master/filesystem/iso9660.ksy",
   "license": "CC0-1.0",
   "via": "iso-image"
  }
 ],
 "tools": [
  {
   "name": "7-Zip (WebAssembly)",
   "url": "https://github.com/use-strict/7z-wasm",
   "license": "LGPL-2.1-or-later (unRAR restriction)",
   "open_source": true,
   "reads": true,
   "writes": false,
   "via": "iso-image"
  },
  {
   "name": "ALZip",
   "url": "https://www.altools.co.kr/download/alzip.aspx",
   "reads": true,
   "writes": false,
   "license": "freeware",
   "via": "iso-image"
  },
  {
   "name": "B1 Free Archiver",
   "url": "http://www.b1.org/",
   "reads": true,
   "writes": false,
   "license": "proprietary license",
   "via": "iso-image"
  },
  {
   "name": "BinChunker",
   "url": "http://he.fi/bchunk/",
   "reads": false,
   "writes": true,
   "license": "GNU General Public License, version 2.0 or later",
   "open_source": true,
   "via": "iso-image"
  },
  {
   "name": "Daemon Tools",
   "url": "https://www.daemon-tools.cc",
   "reads": true,
   "writes": false,
   "license": "shareware",
   "via": "iso-image"
  },
  {
   "name": "ExifTool",
   "url": "https://exiftool.org/",
   "reads": true,
   "writes": false,
   "license": "Artistic License / GNU General Public License, version 1.0 or later",
   "open_source": true,
   "via": "iso-image"
  },
  {
   "name": "EZ CD Audio Converter",
   "url": "https://www.poikosoft.com/",
   "reads": true,
   "writes": false,
   "via": "iso-image"
  },
  {
   "name": "Fedora Media Writer",
   "url": "https://www.wikidata.org/wiki/Q2725237",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0",
   "open_source": true,
   "via": "iso-image"
  },
  {
   "name": "IsoBuster",
   "url": "https://www.isobuster.com/",
   "reads": true,
   "writes": false,
   "via": "iso-image"
  },
  {
   "name": "IsoBuster 1",
   "url": "https://www.wikidata.org/wiki/Q113577809",
   "reads": true,
   "writes": false,
   "via": "iso-image"
  },
  {
   "name": "JLIVECD",
   "url": "https://www.wikidata.org/wiki/Q18352752",
   "reads": true,
   "writes": false,
   "via": "iso-image"
  },
  {
   "name": "libarchive",
   "url": "https://libarchive.org/",
   "reads": true,
   "writes": true,
   "license": "2-clause BSD License",
   "open_source": true,
   "via": "iso-image"
  },
  {
   "name": "PhotoRec",
   "url": "http://www.cgsecurity.org/wiki/PhotoRec",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License",
   "open_source": true,
   "via": "iso-image"
  },
  {
   "name": "PowerISO",
   "url": "http://poweriso.com/",
   "reads": true,
   "writes": true,
   "license": "proprietary license",
   "via": "iso-image"
  },
  {
   "name": "Q1578279",
   "url": "https://wincdemu.sysprogs.org/",
   "reads": true,
   "writes": false,
   "license": "GNU Lesser General Public License",
   "open_source": true,
   "via": "iso-image"
  },
  {
   "name": "Q215051",
   "url": "https://7-zip.org",
   "reads": true,
   "writes": false,
   "license": "GNU Lesser General Public License",
   "open_source": true,
   "via": "iso-image"
  },
  {
   "name": "Roxio MyDVD Plus",
   "url": "https://www.wikidata.org/wiki/Q114594235",
   "reads": false,
   "writes": true,
   "via": "iso-image"
  },
  {
   "name": "Virtual CloneDrive",
   "url": "https://www.redfox.bz/virtual-clonedrive.html",
   "reads": true,
   "writes": false,
   "license": "freeware",
   "via": "iso-image"
  },
  {
   "name": "WinRAR",
   "url": "https://www.rarlab.com/",
   "reads": true,
   "writes": false,
   "license": "proprietary license",
   "via": "iso-image"
  },
  {
   "name": "WinZip",
   "url": "https://www.winzip.com/",
   "reads": true,
   "writes": false,
   "license": "shareware",
   "via": "iso-image"
  },
  {
   "name": "Xfburn",
   "url": "http://www.xfce.org/",
   "reads": false,
   "writes": true,
   "license": "GNU General Public License, version 2.0 or later",
   "open_source": true,
   "via": "iso-image"
  },
  {
   "name": "Zipeg",
   "url": "http://www.zipeg.com/",
   "reads": true,
   "writes": false,
   "license": "BSD licenses",
   "open_source": true,
   "via": "iso-image"
  }
 ],
 "conversions": [
  {
   "to": "zip",
   "tool": "7-Zip (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossless",
   "losses": "The files inside are extracted and repacked; boot records and filesystem metadata are not kept.",
   "url": "https://openformatdb.org/convert/",
   "engine": "7zip",
   "via": "iso-image"
  },
  {
   "to": "7z",
   "tool": "7-Zip (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossless",
   "losses": "The files inside are extracted and repacked; boot records and filesystem metadata are not kept.",
   "url": "https://openformatdb.org/convert/",
   "engine": "7zip",
   "via": "iso-image"
  },
  {
   "to": "tape-archive",
   "tool": "7-Zip (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossless",
   "losses": "The files inside are extracted and repacked; boot records and filesystem metadata are not kept.",
   "url": "https://openformatdb.org/convert/",
   "engine": "7zip",
   "via": "iso-image"
  }
 ],
 "samples": [],
 "claims": [],
 "verification": [],
 "family": "iso-image"
}