Disk Image Formats

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Typically, when archiving a physical disk for later use, a physical disk will be imaged into one of these file formats.  Sub-pages of this page should contain information on the format itself as well as instructions on how to extract a physical disk into that disk image format, including information about what physical drives are required, what software to use and how and what OS that is run under.
 
Typically, when archiving a physical disk for later use, a physical disk will be imaged into one of these file formats.  Sub-pages of this page should contain information on the format itself as well as instructions on how to extract a physical disk into that disk image format, including information about what physical drives are required, what software to use and how and what OS that is run under.
  
See also [[ROM and memory images]] for images of memory, and [[Floppy disk]]s for the physical floppies. See [[Archiving]] for archive and backup formats that are filesystem-based rather than raw-sector-based. See [[Filesystem]] for the filesystems.
+
See also [[ROM and memory images]] for images of memory, and [[Floppy disk]]s for the physical floppies. See [[Archiving]] for archive and backup formats that are filesystem-based rather than raw-sector-based. See [[Filesystem]] for the filesystems. [[Forensics and Law Enforcement]] has formats for preserving drive contents with metadata for investigations.
  
 
==Floppy Disk Image Formats==
 
==Floppy Disk Image Formats==
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====Apple II series====
 
====Apple II series====
  
 +
* [[A2R disk image]]
 
* [[Apple Disk Image]] (Apple II disk image with header) (.2mg)
 
* [[Apple Disk Image]] (Apple II disk image with header) (.2mg)
* [[DART]] (Apple)
 
 
* [[Disk Copy 4.2]] (Apple)
 
* [[Disk Copy 4.2]] (Apple)
 
* [[Disk Copy 6]] (Apple)
 
* [[Disk Copy 6]] (Apple)
 
* [[DSK (Apple II)]], used for Apple II disks (typically 5.25" disks)
 
* [[DSK (Apple II)]], used for Apple II disks (typically 5.25" disks)
 +
* [[EDD disk image]]
 
* [[Nibblized disk image]] (.nib), an Apple II disk image format that works for copy-protected disks
 
* [[Nibblized disk image]] (.nib), an Apple II disk image format that works for copy-protected disks
 +
* [[WOZ disk image]]
  
 
====Atari====
 
====Atari====
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* [[ST disk image]]
 
* [[ST disk image]]
 
* [[STT]] (STEEM)
 
* [[STT]] (STEEM)
 +
* [[STX]] (Pasti)
 
* [[XFD]] (Xformer)
 
* [[XFD]] (Xformer)
  
====Commodore 64/128====
+
====Commodore 64/128/PET/CBM====
  
 
* [[C64 Nibbler Format]] (.nib) (created by mnib)
 
* [[C64 Nibbler Format]] (.nib) (created by mnib)
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* [[Apple Disk Image]] (MacOS or OS X disk image with header) (.dmg, .smi, .img)
 
* [[Apple Disk Image]] (MacOS or OS X disk image with header) (.dmg, .smi, .img)
 +
* [[DART]] (Apple)
  
 
====PC (DOS/Windows)====
 
====PC (DOS/Windows)====
  
 +
* [[CopyQM]]
 +
* [[DDI]] (DiskDupe image file)
 +
* [[FDF Image]] (EZ-DisKlone)
 
* [[FDI]] (Formatted Disk Image)
 
* [[FDI]] (Formatted Disk Image)
 
* [[IMA]]
 
* [[IMA]]
 
* [[IMD]] (ImageDisk)
 
* [[IMD]] (ImageDisk)
 +
* [[IMG (DOSIMG)|IMG]] (HD-Copy disk image)
 +
* [[Quick Release Sector Transfer]] (Compaq)
 
* [[TD0]] (TeleDisk)
 
* [[TD0]] (TeleDisk)
* [[IMG]] (HD-Copy disk image)
 
* [[DDI]] (DiskDupe image file)
 
  
 
====Tandy====
 
====Tandy====
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* [[JV1/JV3]]
 
* [[JV1/JV3]]
  
====Misc.====
+
====ZX Spectrum====
 +
* [[Mirage Microdrive Snapshot]]
 +
* [[TRD]] (see [[TR-DOS filesystem]])
  
 +
====Misc.====
 +
* [[Anex86 PC98 floppy image]] (.fdi)
 
* [[DiscFerret floppy image]] (.dfi)
 
* [[DiscFerret floppy image]] (.dfi)
 
* [[Famicom Disk System]] (.fds)
 
* [[Famicom Disk System]] (.fds)
 +
* [[LDBS disk image]] (.ldbs)
 
* [[MESS floppy image]] (.mfi)
 
* [[MESS floppy image]] (.mfi)
 
* [[Pasopia disk image]] (.d88)
 
* [[Pasopia disk image]] (.d88)
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* [[DRAFT]] (Software Preservation Society intermediate format)
 
* [[DRAFT]] (Software Preservation Society intermediate format)
 
* [[IPF]] (Software Preservation Society image format)
 
* [[IPF]] (Software Preservation Society image format)
 +
* [[KryoFlux]]
  
 
==Optical Disc Image Formats==
 
==Optical Disc Image Formats==
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* [[CAS (Atari)|CAS]] (Atari; Digital Cassette Image system)
 
* [[CAS (Atari)|CAS]] (Atari; Digital Cassette Image system)
 
* [[PZX]] (ZX Spectrum)
 
* [[PZX]] (ZX Spectrum)
 +
* [[T64]]
 
* [[TAP (ZX Spectrum)]]
 
* [[TAP (ZX Spectrum)]]
 
* [[Tap file]] (contains data from Commodore data cassette)
 
* [[Tap file]] (contains data from Commodore data cassette)
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==Unknown==
 
==Unknown==
* [[lbl]] See here for details: [http://classiccmp.org/pipermail/cctalk/2012-December/326747.html http://classiccmp.org/pipermail/cctalk/2012-December/326747.html]
+
* [[lbl]] See here for details: [https://web.archive.org/web/20130103032119/http://classiccmp.org/pipermail/cctalk/2012-December/326747.html]
  
 
==Tools==
 
==Tools==
 
* [[The Sleuth Kit and Autopsy]] can read raw, Expert Witness, and AFF formats
 
* [[The Sleuth Kit and Autopsy]] can read raw, Expert Witness, and AFF formats
 
* [http://www.winimage.com/ WinImage] to read, write and create images, also lots of info
 
* [http://www.winimage.com/ WinImage] to read, write and create images, also lots of info
 +
* [http://foremost.sourceforge.net/ Foremost: console tool to recover files from disk images]
 +
* [http://disktype.sourceforge.net/ disktype: detect format of disk or disk image]
 +
* [http://mark0.net/soft-trid-e.html TrID File Identifier]: recognize many disk image formats
 +
* [https://github.com/bitcurator/bca-webtools bca-webtools]
 +
* [https://github.com/eaas-framework/xmount xmount: emulates various disk image formats for use in emulators requiring them]
  
 
See also [[Disk Imaging Software & Systems]], and [[Forensics and Law Enforcement]].
 
See also [[Disk Imaging Software & Systems]], and [[Forensics and Law Enforcement]].
 +
 +
== Links ==
 +
* [http://qanda.digipres.org/20/what-are-the-reasons-for-saving-disk-images?show=183 What are the reasons for saving disk images?]
 +
* [http://ils.unc.edu/digccurr/curategear2016-talks/woods-curategear2016.pdf BCA-Webtools: Accessing and Visualizing Disk Images in a Web Browser]

Revision as of 19:56, 28 August 2019

File Format
Name Disk Image Formats
Ontology

{{{caption}}}

Filesystems and other file formats described on this page's parent page describe entities that exist on disks as they would normally be used.

However, there are also file formats that allow a physical disk (or tape or other medium) to be "imaged" into a file, either to be re-copied onto a physical disk later, or else used by an *emulator* of the computer system that would have originally used that sort of media.

These file formats represent a data image of one of the physical floppy disk (etc.) formats. In addition to the raw data from the disk/tape/etc, these formats may contain metadata that the corresponding emulator environment uses to correctly access the data.

Typically, when archiving a physical disk for later use, a physical disk will be imaged into one of these file formats. Sub-pages of this page should contain information on the format itself as well as instructions on how to extract a physical disk into that disk image format, including information about what physical drives are required, what software to use and how and what OS that is run under.

See also ROM and memory images for images of memory, and Floppy disks for the physical floppies. See Archiving for archive and backup formats that are filesystem-based rather than raw-sector-based. See Filesystem for the filesystems. Forensics and Law Enforcement has formats for preserving drive contents with metadata for investigations.

Contents

Floppy Disk Image Formats

Images created directly from floppy disks.

Generic Sector Images

Acorn

Amiga

Amstrad

  • DSK (CPCEMU), used for Amstrad and related disks (typically 3" disks)

APF Imagination Machine

  • APD (APF Imagination Machine emulated disk) (.apd)

Apple II series

Atari

Commodore 64/128/PET/CBM

  • C64 Nibbler Format (.nib) (created by mnib)
  • D64 and its variants (D71, D81, all with optional error information) from the C64
  • G64 C64 raw (GCR coded) disk image

Macintosh

PC (DOS/Windows)

Tandy

ZX Spectrum

Misc.

Physical (Hardware) Images

  • DRAFT (Software Preservation Society intermediate format)
  • IPF (Software Preservation Society image format)
  • KryoFlux

Optical Disc Image Formats

CD-ROM, DVD-ROM, BluRay, GD-ROM etc.

Hard Disk Image Formats

Virtual Machine Disks and Virtualization Image Formats

Tape Image Formats

  • APT (APF Imagination Machine emulated tape, logical bits) (.apt)
  • APW (APF Imagination Machine emulated tape, raw audio) (.apw)
  • CAS (Atari; Digital Cassette Image system)
  • PZX (ZX Spectrum)
  • T64
  • TAP (ZX Spectrum)
  • Tap file (contains data from Commodore data cassette)
  • TZX (ZX Spectrum)
  • Unified Emulator Format (UEF; also does Acorn disks and ROMs)

Unknown

  • lbl See here for details: [1]

Tools

See also Disk Imaging Software & Systems, and Forensics and Law Enforcement.

Links

Personal tools
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