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<title>Macintosh File System</title>

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</style><div role="note" class="hatnote navigation-not-searchable">This article is about the MFS file system. For other Macintosh file systems, see <a href="Macintosh_file_system_(disambiguation)" class="mw-redirect mw-disambig" title="Macintosh file system (disambiguation)">Macintosh file system (disambiguation)</a>.</div>

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</style><table class="infobox vevent"><caption class="infobox-title summary">MFS</caption><tbody><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_developer" class="mw-redirect" title="Software developer">Developer(s)</a></th><td class="infobox-data">Apple Computer, Inc.</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Full name</th><td class="infobox-data">Macintosh File System</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Introduced</th><td class="infobox-data">January 24, 1984<span style="display:none"> (<span class="bday dtstart published updated">1984-01-24</span>)</span> with <a href="System_1" title="System 1">System 1</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Succeeded by</th><td class="infobox-data"><a href="Hierarchical_File_System_(Apple)" title="Hierarchical File System (Apple)">HFS</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Partition_type" title="Partition type">Partition IDs</a></th><td class="infobox-data"><code>Apple_MFS</code> (<a href="Apple_Partition_Map" title="Apple Partition Map">Apple Partition Map</a>)</td></tr><tr><th colspan="2" class="infobox-header">Structures</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Directory contents</th><td class="infobox-data"><a href="Table_(information)" title="Table (information)">Table</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">File allocation</th><td class="infobox-data"><a href="Linked_list" title="Linked list">Linked list</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Bad blocks</th><td class="infobox-data">No</td></tr><tr><th colspan="2" class="infobox-header">Limits</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Max volume size</th><td class="infobox-data">20 <a href="Mebibyte" class="mw-redirect" title="Mebibyte">MiB</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Max file size</th><td class="infobox-data">20 <a href="Mebibyte" class="mw-redirect" title="Mebibyte">MiB</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Max <abbr title="number">no.</abbr> of files</th><td class="infobox-data">4094</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Max filename length</th><td class="infobox-data">255 characters</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Allowed filename<br>characters</th><td class="infobox-data">Any printable character except “<style data-mw-deduplicate="TemplateStyles:r886049734">

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</style><span class="monospaced">:</span>”</td></tr><tr><th colspan="2" class="infobox-header">Features</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Dates recorded</th><td class="infobox-data">Creation, modification</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Date range</th><td class="infobox-data">January 1, 1904 – February 6, 2040</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Date resolution</th><td class="infobox-data">1s</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Fork_(file_system)" title="Fork (file system)">Forks</a></th><td class="infobox-data">Only 2 (<a href="Data_fork" class="mw-redirect" title="Data fork">data</a> and <a href="Resource_fork" title="Resource fork">resource</a>)</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Attributes</th><td class="infobox-data">version, locked, type, creator, Finder window, location in Finder window, Finder flags</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="File_system_permissions" class="mw-redirect" title="File system permissions">File system<br>permissions</a></th><td class="infobox-data">No</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Transparent<br>compression</th><td class="infobox-data">No</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Filesystem-level_encryption" title="Filesystem-level encryption">Transparent<br>encryption</a></th><td class="infobox-data">No</td></tr><tr><th colspan="2" class="infobox-header">Other</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Supported<br><a href="Operating_system" title="Operating system">operating systems</a></th><td class="infobox-data"><a href="System_1" title="System 1">System 1</a> — <a href="Classic_Mac_OS#Mac_OS_7.6" title="Classic Mac OS">Mac OS 7.6</a>,<br>Mac OS 7.6.1 (read-only)</td></tr></tbody></table>

<p><b>Macintosh File System</b> (<b>MFS</b>) is a <a href="Volume_(computing)" title="Volume (computing)">volume</a> format (or disk <a href="File_system" title="File system">file system</a>) created by <a href="Apple_Computer" class="mw-redirect" title="Apple Computer">Apple Computer</a> for storing <a href="Computer_file" title="Computer file">files</a> on 400K <a href="Floppy_disk" title="Floppy disk">floppy disks</a>. MFS was introduced with the original <a href="Macintosh_128K" title="Macintosh 128K">Apple Macintosh</a> computer in January 1984.

</p><p>MFS is notable both for introducing <a href="Resource_fork" title="Resource fork">resource forks</a> to allow storage of structured data, and for storing <a href="Metadata_(computing)" class="mw-redirect" title="Metadata (computing)">metadata</a> needed to support the <a href="Graphical_user_interface" title="Graphical user interface">graphical user interface</a> of the <a href="Classic_Mac_OS" title="Classic Mac OS">classic Mac OS</a>. MFS allows file names to be up to 255 <a href="Character_(computing)" title="Character (computing)">characters</a> in length,<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> although <a href="Macintosh_Finder" class="mw-redirect" title="Macintosh Finder">Finder</a> does not allow users to create names longer than 63 characters (31 characters in later versions). MFS is called a <a href="File_system#Flat_file_systems" title="File system">flat file system</a> because it does not support a hierarchy of <a href="Directory_(file_systems)" class="mw-redirect" title="Directory (file systems)">directories</a>.

</p><p>Folders exist as a concept on the original MFS-based Macintosh, but work completely differently from the way they do on modern systems. They are visible in <a href="Finder_(software)" title="Finder (software)">Finder</a> windows, but not in the open and save <a href="Dialog_box" title="Dialog box">dialog boxes</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> There is always one empty folder on the volume, and if it is altered in any way (such as by adding or renaming files), a new Empty Folder appears, thus providing a way to create new folders. MFS stores all of the file and directory listing information in a single file. The Finder creates the illusion of folders, by storing all files as pairs of directory handles and file handles. To display the contents of a particular folder, MFS scans the directory for all files in that handle. There is no need to find a separate file containing the directory listing.

</p><p>The Macintosh File System does not support volumes over 20 MB in size, or about 1,400 files. While this is small by today's standards, at the time it seemed very expansive when compared to the <a href="Macintosh" class="mw-redirect" title="Macintosh">Macintosh</a>'s 400 KB floppy drive.

</p><p>Apple introduced <a href="Hierarchical_File_System_(Apple)" title="Hierarchical File System (Apple)">Hierarchical File System</a> as a replacement for MFS in September 1985. In <a href="System_7_(Macintosh)" class="mw-redirect" title="System 7 (Macintosh)">Mac OS 7.6.1</a>, Apple removed support for writing to MFS volumes “as such writes often resulted in errors or system hangs”,<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> and in <a href="Mac_OS_8.0" class="mw-redirect" title="Mac OS 8.0">Mac OS 8.0</a> support for MFS volumes was removed altogether. Although <a href="MacOS" title="MacOS">macOS</a> (formerly Mac OS X) has no built-in support for MFS, an example VFS plug-in from Apple called MFSLives provides read-only access to MFS volumes.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>

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<ul><li><a href="Comparison_of_file_systems" title="Comparison of file systems">Comparison of file systems</a></li></ul>

<div class="mw-heading mw-heading2"><h2 id="Citations">Citations</h2></div>

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</style><cite id="CITEREFLangowski1985" class="citation magazine cs1">Langowski, Jörg (April 1985). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070927021320/http://mactech.com/articles/mactech/Vol.01/01.05/Disks/">"Disks"</a>. <i><a href="MacTech" title="MacTech">MacTech</a></i>. Vol. 1, no. 5. Archived from <a rel="nofollow" class="external text" href="http://mactech.com/articles/mactech/Vol.01/01.05/Disks/">the original</a> on 2007-09-27<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-03-23</span></span>.</cite></span>

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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite id="CITEREFBrecher" class="citation magazine cs1">Brecher, Steve. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080426003220/http://www.mactech.com/articles/mactech/Vol.01/01.12/HFSFileStructure/index.html">"HFS File Structure Explained"</a>. <i><a href="MacTech" title="MacTech">MacTech</a></i>. Vol. 1, no. 12. Archived from <a rel="nofollow" class="external text" href="http://www.mactech.com/articles/mactech/Vol.01/01.12/HFSFileStructure/index.html">the original</a> on 2008-04-26<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-03-23</span></span>.</cite></span>

</li>

<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/19990429061118/https://developer.apple.com/technotes/tn/tn1096.html">"Technote 1096: Mac OS 7.6.1"</a>. <a href="Apple_Inc." title="Apple Inc.">Apple Inc.</a> Archived from <a rel="nofollow" class="external text" href="https://developer.apple.com/technotes/tn/tn1096.html">the original</a> on 1999-04-29<span class="reference-accessdate">. Retrieved <span class="nowrap">2013-09-16</span></span>.</cite></span>

</li>

<li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://developer.apple.com/library/archive/samplecode/MFSLives/Introduction/Intro.html">"MFSLives"</a>. <i>Apple Developer Documentation Archive</i>. 2006-11-09<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-03-13</span></span>.</cite></span>

</li>

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<div class="mw-heading mw-heading2"><h2 id="General_and_cited_references">General and cited references</h2></div>

<ul><li><cite id="CITEREFApple_Computer,_Inc.1985" class="citation book cs1">Apple Computer, Inc. (1985). <i>Inside Macintosh Volume II</i>. New York: Addison-Wesley. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-201-17732-3</bdi>.</cite></li></ul>

<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20080226120702/http://docs.info.apple.com/article.html?artnum=9502">Apple Tech Article 9502</a>—MFS volume support in Mac OS 7.x</li>

<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20071016214449/http://homepage.mac.com/senorwences/mfs-floppies/resurrect-floppies.html">Resurrecting MFS Macintosh Floppies</a></li>

<li><a rel="nofollow" class="external text" href="http://www.savetz.com/ku/ku/cranston_fred_s_follies_july_1987.html">Fred's Follies</a>—HFS used in Macs with 128K ROMs different from MFS used in Macs with 64K ROMs</li>

<li><a rel="nofollow" class="external text" href="http://www.mac512.com/macwebpages/qamacplus.htm">Q&A: Mac Plus</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070716124352/http://www.mac512.com/macwebpages/qamacplus.htm">Archived</a> 2007-07-16 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>—limitation due to MFS on an external 400K floppy drive disk</li></ul>

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</style></div><div role="navigation" class="navbox" aria-labelledby="Classic_Mac_OS73" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><style data-mw-deduplicate="TemplateStyles:r1239400231">

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</style><div id="Classic_Mac_OS73" style="font-size:114%;margin:0 4em"><a href="Classic_Mac_OS" title="Classic Mac OS">Classic Mac OS</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Versions</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="System_1" title="System 1">System 1</a></li>

<li><a href="Classic_Mac_OS#System_1,_2,_3_and_4" title="Classic Mac OS">System 2, 3, and 4</a></li>

<li><a href="Classic_Mac_OS#System_Software_5" title="Classic Mac OS">System 5</a></li>

<li><a href="System_6" title="System 6">System 6</a></li>

<li><a href="System_7" title="System 7">System 7</a>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Applications</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Calculator_(Apple)" title="Calculator (Apple)">Calculator</a></li>

<li><a href="Chooser_(Mac_OS)" title="Chooser (Mac OS)">Chooser</a></li>

<li>Drive Setup</li>

<li><a href="DVD_Player_(macOS)" class="mw-redirect" title="DVD Player (macOS)">DVD Player</a></li>

<li><a href="Finder_(software)" title="Finder (software)">Finder</a></li>

<li><a href="NuCalc" title="NuCalc">Graphing Calculator</a></li>

<li><a href="Keychain_(software)" title="Keychain (software)">Keychain Access</a></li>

<li><a href="QuickTime" title="QuickTime">PictureViewer</a></li>

<li><a href="Apple_Open_Collaboration_Environment" title="Apple Open Collaboration Environment">PowerTalk</a></li>

<li><a href="QuickTime" title="QuickTime">QuickTime Player</a></li>

<li><a href="Network_Browser" title="Network Browser">Network Browser</a></li>

<li><a href="Scrapbook_(Mac_OS)" title="Scrapbook (Mac OS)">Scrapbook</a></li>

<li><a href="Sherlock_(software)" title="Sherlock (software)">Sherlock</a></li>

<li><a href="Apple_Software_Update" class="mw-redirect" title="Apple Software Update">Software Update</a></li>

<li><a href="Stickies_(Apple)" title="Stickies (Apple)">Stickies</a></li>

<li><a href="System_Information_(Mac)" class="mw-redirect" title="System Information (Mac)">System Information</a></li>

<li><a href="SimpleText" title="SimpleText">SimpleText</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Developer</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="HyperCard" title="HyperCard">HyperCard</a></li>

<li><a href="MacsBug" title="MacsBug">MacsBug</a></li>

<li><a href="Macintosh_Programmer's_Workshop" title="Macintosh Programmer's Workshop">Macintosh Programmer's Workshop</a></li>

<li><a href="ResEdit" title="ResEdit">ResEdit</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technology</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Alias_(Mac_OS)" title="Alias (Mac OS)">Alias</a></li>

<li><a href="Appearance_Manager" title="Appearance Manager">Appearance Manager</a></li>

<li><a href="Apple_menu" title="Apple menu">Apple menu</a></li>

<li><a href="Balloon_help" title="Balloon help">Balloon help</a></li>

<li><a href="Bomb_(icon)" title="Bomb (icon)">Bomb error</a></li>

<li><a href="Command_key" title="Command key">Command key (⌘)</a></li>

<li><a href="System_Preferences" class="mw-redirect" title="System Preferences">Control Panel</a></li>

<li><a href="Control_Strip" title="Control Strip">Control Strip</a></li>

<li><a href="Creator_code" title="Creator code">Creator code</a></li>

<li><a href="Dogcow" title="Dogcow">Dogcow</a></li>

<li><a href="Extension_(Mac_OS)" title="Extension (Mac OS)">Extensions</a></li>

<li><a href="Hierarchical_File_System_(Apple)" title="Hierarchical File System (Apple)">Hierarchical File System</a></li>

<li><a href="Keychain_(software)" title="Keychain (software)">Keychain</a></li>

<li><a href="Label_(Mac_OS)" title="Label (Mac OS)">Labels</a></li>

<li><a href="Macintosh_Toolbox" title="Macintosh Toolbox">Macintosh Toolbox</a></li>

<li><a href="Manager_(Mac_OS)" title="Manager (Mac OS)">Managers</a></li>

<li><a href="MultiFinder" title="MultiFinder">MultiFinder</a></li>

<li><a href="Multiprocessing_Services" title="Multiprocessing Services">Multiprocessing Services</a></li>

<li><a href="Option_key" title="Option key">Option key (⌥)</a></li>

<li><a href="OSType" class="mw-redirect" title="OSType">OSType</a></li>

<li><a href="QuickDraw" title="QuickDraw">QuickDraw</a></li>

<li><a href="QuickTime" title="QuickTime">QuickTime</a></li>

<li><a href="Resource_fork" title="Resource fork">Resource fork</a></li>

<li><a href="Sosumi" title="Sosumi">Sosumi sound</a></li>

<li><a href="Macintosh_startup" title="Macintosh startup">Startup sequence</a></li>

<li><a href="System_folder" title="System folder">System folder</a></li>

<li><a href="System_suitcase" title="System suitcase">System suitcase</a></li>

<li><a href="WorldScript" title="WorldScript">WorldScript</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related articles</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Mac_OS_memory_management" class="mw-redirect" title="Mac OS memory management">Memory management</a></li>

<li><a href="Old_World_ROM" title="Old World ROM">Old World ROM</a></li>

<li><a href="New_World_ROM" title="New World ROM">New World ROM</a></li>

<li><a href="List_of_Classic_Mac_OS_software" title="List of Classic Mac OS software">Software</a></li>

<li><a href="Mac_transition_to_PowerPC_processors" title="Mac transition to PowerPC processors">Transition to PowerPC</a></li></ul>

</div></td></tr></tbody></table></div>

<div class="navbox-styles"></div><div role="navigation" class="navbox" aria-labelledby="File_systems283" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="File_systems283" style="font-size:114%;margin:0 4em"><a href="File_system" title="File system">File systems</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div>

<ul><li><a href="Comparison_of_file_systems" title="Comparison of file systems">Comparison of file systems</a>

<ul><li><a href="Comparison_of_distributed_file_systems" title="Comparison of distributed file systems">distributed</a></li></ul></li>

<li><a href="Unix_filesystem" title="Unix filesystem">Unix filesystem</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Disk and<br>non-rotating</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="AdvFS" title="AdvFS">AdvFS</a></li>

<li><a href="Amiga_Fast_File_System" title="Amiga Fast File System">Amiga FFS</a></li>

<li><a href="Amiga_Old_File_System" title="Amiga Old File System">Amiga OFS</a></li>

<li><a href="AtheOS_File_System" class="mw-redirect" title="AtheOS File System">AthFS</a></li>

<li><a href="Bcachefs" title="Bcachefs">bcachefs</a></li>

<li>BFS

<ul><li><a href="Be_File_System" title="Be File System">Be File System</a></li>

<li><a href="Boot_File_System" title="Boot File System">Boot File System</a></li>

<li>Byte File System (<a href="Z/VM" title="Z/VM">z/VM</a>)</li></ul></li>

<li><a href="Btrfs" title="Btrfs">Btrfs</a></li>

<li>EFS

<ul><li><a href="Encrypting_File_System" title="Encrypting File System">Encrypting File System</a></li>

<li><a href="Extent_File_System" title="Extent File System">Extent File System</a></li></ul></li>

<li><a href="Episode_filesystem" title="Episode filesystem">Episode</a></li>

<ul><li><a href="ExFAT" title="ExFAT">exFAT</a></li></ul></li>

<li><a href="Files-11" title="Files-11">Files-11</a></li>

<li><a href="Fossil_(file_system)" title="Fossil (file system)">Fossil</a></li>

<li><a href="HAMMER_(file_system)" title="HAMMER (file system)">HAMMER</a>

<ul><li><a href="HAMMER2" title="HAMMER2">HAMMER2</a></li></ul></li>

<li><a href="Hierarchical_File_System_(Apple)" title="Hierarchical File System (Apple)">HFS</a> (<a href="Classic_Mac_OS" title="Classic Mac OS">Classic Mac OS</a>)</li>

<li>MFS

<ul>

<li><a href="TiVo_Media_File_System" title="TiVo Media File System">TiVo Media File System</a></li></ul></li>

<li><a href="MINIX_file_system" title="MINIX file system">MINIX</a></li>

<li><a href="NetWare_File_System" title="NetWare File System">NetWare File System</a></li>

<li><a href="NILFS" title="NILFS">NILFS</a>

<ul><li><a href="NILFS" title="NILFS">NILFS2</a></li></ul></li>

<li><a href="OneFS_distributed_file_system" title="OneFS distributed file system">OneFS</a></li>

<li><a href="OpenZFS" title="OpenZFS">OpenZFS</a></li>

<li><a href="ReiserFS" title="ReiserFS">ReiserFS</a>

<ul><li><a href="Reiser4" title="Reiser4">Reiser4</a></li></ul></li>

<li><a href="Datalight#Reliance_family" title="Datalight">Reliance</a></li>

<li><a href="Datalight#Reliance_Nitro" title="Datalight">Reliance Nitro</a></li>

<li>SFS

<ul><li>Shared File System (<a href="VM_(operating_system)" title="VM (operating system)">VM</a>)</li>

<li><a href="Smart_File_System" title="Smart File System">Smart File System</a></li></ul></li>

<li><a href="Soup_(Apple)" title="Soup (Apple)">Soup (Apple)</a></li>

<li><a href="UBIFS" title="UBIFS">UBIFS</a></li>

<ul><li><a href="Soft_updates" title="Soft updates">soft updates</a></li>

<li><a href="Write_Ahead_Physical_Block_Logging" title="Write Ahead Physical Block Logging">WAPBL</a></li></ul></li>

<li><a href="Xiafs" title="Xiafs">Xiafs</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Optical_disc" title="Optical disc">Optical disc</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Flash_memory" title="Flash memory">Flash memory</a> and <a href="Solid-state_drive" title="Solid-state drive">SSD</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="ExFAT" title="ExFAT">exFAT</a></li>

<li><a href="EROFS" title="EROFS">EROFS</a></li>

</div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="host-side_wear_leveling27" scope="row" class="navbox-group" style="width:1%">host-side <a href="Wear_leveling" title="Wear leveling">wear leveling</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="LogFS" title="LogFS">LogFS</a></li>

<li><a href="NILFS" title="NILFS">NILFS</a>

<ul><li><a href="NILFS" title="NILFS">NILFS2</a></li></ul></li>

<li><a href="YAFFS" title="YAFFS">YAFFS</a></li>

<li><a href="UBIFS" title="UBIFS">UBIFS</a></li></ul>

</div></td></tr></tbody></table><div>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Clustered_file_system#Distributed_file_systems" title="Clustered file system">Distributed parallel</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="BeeGFS" title="BeeGFS">BeeGFS</a></li>

<li><a href="Google_File_System" title="Google File System">Google File System</a></li>

<li><a href="OrangeFS" title="OrangeFS">OrangeFS</a></li>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Network-attached_storage" title="Network-attached storage">NAS</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Andrew_File_System" title="Andrew File System">AFS</a> (<a href="OpenAFS" title="OpenAFS">OpenAFS</a>)</li>

<li><a href="Google_File_System" title="Google File System">Google File System</a></li>

<li><a href="Lustre_(file_system)" title="Lustre (file system)">Lustre</a></li>

<li><a href="Elliptics" title="Elliptics">POHMELFS</a></li>

<li><a href="Apache_Hadoop" title="Apache Hadoop">Hadoop</a></li>

<li><a href="SSHFS" title="SSHFS">SSHFS</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Specialized</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Boot_File_System" title="Boot File System">Boot File System</a></li>

<li><a href="Compact_Disc_File_System" title="Compact Disc File System">Compact Disc File System</a></li>

<li><a href="Cramfs" title="Cramfs">cramfs</a></li>

<li><a href="Davfs2" title="Davfs2">Davfs2</a></li>

<li><a href="EROFS" title="EROFS">EROFS</a></li>

<li><a href="FTPFS" title="FTPFS">FTPFS</a></li>

<li><a href="SquashFS" title="SquashFS">SquashFS</a></li>

<li><a href="FAT_filesystem_and_Linux" title="FAT filesystem and Linux">UMSDOS</a></li>

<li><a href="OverlayFS" title="OverlayFS">OverlayFS</a></li>

<li><a href="UnionFS" title="UnionFS">UnionFS</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Pseudo</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Configfs" title="Configfs">configfs</a></li>

<li><a href="Device_file" title="Device file">devfs</a></li>

<li><a href="Debugfs" title="Debugfs">debugfs</a></li>

<li><a href="Kernfs_(BSD)" title="Kernfs (BSD)">kernfs</a></li>

<li><a href="Procfs" title="Procfs">procfs</a></li>

<li>specfs</li>

<li><a href="Sysfs" title="Sysfs">sysfs</a></li>

<li><a href="Tmpfs" title="Tmpfs">tmpfs</a></li>

<li><a href="WinFS" title="WinFS">WinFS</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Filesystem-level_encryption" title="Filesystem-level encryption">Encrypted</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="ECryptfs" title="ECryptfs">eCryptfs</a></li>

<li><a href="EncFS" title="EncFS">EncFS</a></li>

<li><a href="Rubberhose_(file_system)" class="mw-redirect" title="Rubberhose (file system)">Rubberhose</a></li>

<li><a href="SSHFS" title="SSHFS">SSHFS</a></li>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Types</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Clustered_file_system" title="Clustered file system">Clustered</a>

<ul><li><a href="Global_file_system" title="Global file system">Global</a></li>

<li><a href="Self-certifying_File_System" title="Self-certifying File System">Self-certifying</a></li></ul></li>

<li><a href="Flash_file_system" title="Flash file system">Flash</a></li>

<li><a href="Journaling_file_system" title="Journaling file system">Journaling</a></li>

<li><a href="Log-structured_file_system" title="Log-structured file system">Log-structured</a></li>

<li><a href="Object_storage" title="Object storage">Object</a></li>

<li><a href="Record-oriented_filesystem" title="Record-oriented filesystem">Record-oriented</a></li>

<li><a href="Semantic_file_system" title="Semantic file system">Semantic</a></li>

<li><a href="Steganographic_file_system" title="Steganographic file system">Steganographic</a></li>

<li><a href="Synthetic_file_system" title="Synthetic file system">Synthetic</a></li>

<li><a href="Versioning_file_system" title="Versioning file system">Versioning</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Features</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Case_preservation" title="Case preservation">Case preservation</a></li>

<li><a href="Copy-on-write" title="Copy-on-write">Copy-on-write</a></li>

<li><a href="Data_deduplication" title="Data deduplication">Data deduplication</a></li>

<li><a href="Data_scrubbing" title="Data scrubbing">Data scrubbing</a></li>

<li><a href="Execute_in_place" title="Execute in place">Execute in place</a></li>

<li><a href="Extent_(file_systems)" title="Extent (file systems)">Extent</a></li>

<li><a href="File_attribute" title="File attribute">File attribute</a>

<ul><li><a href="Extended_file_attributes" title="Extended file attributes">Extended file attributes</a></li></ul></li>

<li><a href="File_change_log" title="File change log">File change log</a></li>

<li><a href="Inode" title="Inode">Inode</a></li>

<li>Links

<li><a href="Symbolic_link" title="Symbolic link">Symbolic</a></li></ul></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Computer_access_control" title="Computer access control">Access control</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Access-control_list" title="Access-control list">Access-control list</a></li>

<li><a href="Filesystem-level_encryption" title="Filesystem-level encryption">Filesystem-level encryption</a></li>

<li><a href="File-system_permissions" title="File-system permissions">Permissions</a>

<ul><li><a href="Chmod" title="Chmod">Modes</a></li>

<li><a href="Sticky_bit" title="Sticky bit">Sticky bit</a></li></ul></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Interface_(computing)" title="Interface (computing)">Interfaces</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="File_manager" title="File manager">File manager</a></li>

<li><a href="File_system_API" title="File system API">File system API</a>

<ul><li><a href="Installable_File_System" title="Installable File System">Installable File System</a></li></ul></li>

<li><a href="Virtual_file_system" title="Virtual file system">Virtual file system</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="List_of_file_systems" title="List of file systems">Lists</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="List_of_cryptographic_file_systems" title="List of cryptographic file systems">Cryptographic</a></li>

<li><a href="List_of_default_file_systems" title="List of default file systems">Default</a></li>

<li><a href="List_of_log-structured_file_systems" title="List of log-structured file systems">Log-structured</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Layouts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Master_Boot_Record" class="mw-redirect" title="Master Boot Record">Master Boot Record</a></li>

<li><a href="GUID_Partition_Table" title="GUID Partition Table">GUID Partition Table</a></li>

<li><a href="Apple_Partition_Map" title="Apple Partition Map">Apple Partition Map</a></li></ul>

</div></td></tr></tbody></table></div></div><div><div class="zim-footer">

This article is issued from <a class="external text" title="Last edited on 2025-05-01" href="https://en.wikipedia.org/wiki/?title=Macintosh_File_System&oldid=1288181525">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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