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<title>NetWare File System</title>

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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">NetWare File System</span></span>

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</style><table class="infobox vevent"><caption class="infobox-title summary">NWFS</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"><a href="Novell" title="Novell">Novell</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Full name</th><td class="infobox-data">NetWare File System</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"><a href="Partition_type#PID_64h" title="Partition type">0x64</a> (<a href="NWFS_286" class="mw-redirect" title="NWFS 286">NWFS 286</a>),<br> <a href="Partition_type#PID_65h" title="Partition type">0x65</a> (<a href="NWFS_386" class="mw-redirect" title="NWFS 386">NWFS 386</a>),<br> <a href="Partition_type#PID_66h" title="Partition type">0x66</a> (<a href="NWFS_386" class="mw-redirect" title="NWFS 386">NWFS 386</a>)</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">1 <a href="Terabyte" class="mw-redirect" title="Terabyte">TB</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Max file size</th><td class="infobox-data">4 <a href="Gigabyte" title="Gigabyte">GB</a></td></tr><tr><th colspan="2" class="infobox-header">Features</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Transparent<br>compression</th><td class="infobox-data">Yes</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="Novell_NetWare" class="mw-redirect" title="Novell NetWare">Novell NetWare</a>, <a href="MSDOS" class="mw-redirect" title="MSDOS">MSDOS</a>, <a href="Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a>, and <a href="Linux" title="Linux">Linux</a></td></tr></tbody></table>

<p>In <a href="Computing" title="Computing">computing</a>, the <b>NetWare File System</b> (<b>NWFS</b>) was a <a href="File_system" title="File system">file system</a> based on a heavily optimized, journal-based <a href="File_Allocation_Table" title="File Allocation Table">FAT</a> file system. It was used in the <a href="Novell_NetWare" class="mw-redirect" title="Novell NetWare">Novell NetWare</a> <a href="Network_operating_system" title="Network operating system">network operating system</a>. It was the only file system for all volumes in NetWare versions 2.x, 3.x and 4.x, and the default and only file system for the SYS: volume continuing through version 5.x. Novell developed two varieties of NWFS:

</p>

<ol><li>16-bit NWFS 286, used in NetWare 2.x</li>

<li>32-bit NWFS 386, used in NetWare 3.x through NetWare 6.x.</li></ol>

<p>In NetWare 5 and above, <a href="Novell_Storage_Services" title="Novell Storage Services">Novell Storage Services</a> (NSS, released in 1998), superseded the NWFS format.

</p><p>The NWFS on-disk format was never publicly released by Novell, but it was released by former Novell engineers as an open source project on Windows, Linux, and DOS in 2000. The project contains a complete rewrite of the NetWare File System, publishes all of the file system internals, and is hosted on <a href="GitHub" title="GitHub">GitHub</a> and <a href="GitLab" title="GitLab">GitLab</a>.<sup id="cite_ref-GitLab_2024_u925_1-0" class="reference"><a href="#cite_note-GitLab_2024_u925-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-GitHub_2019_m762_2-0" class="reference"><a href="#cite_note-GitHub_2019_m762-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>

</p><p>The published specifications<sup id="cite_ref-GitLab_2024_u925_1-1" class="reference"><a href="#cite_note-GitLab_2024_u925-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> for 32-bit NWFS are:

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<ul><li>Maximum file size: 4 <a href="Gigabyte" title="Gigabyte">GB</a></li>

<li>Maximum volume size: 1 <a href="Terabyte" class="mw-redirect" title="Terabyte">TB</a></li>

<li>Maximum files per volume: 2 million when using a single name space.</li>

<li>Maximum files per server: 16 million</li>

<li>Maximum directory entries: 16 million</li>

<li>Maximum volumes per server: 64</li>

<li>Maximum volumes per partition: 8</li>

<li>Maximum open files per server: 100,000</li>

<li>Maximum directory tree depth: 100 levels</li>

<li>Characters used: ASCII double-byte</li>

<li>Maximum <a href="Metadata_(computing)" class="mw-redirect" title="Metadata (computing)">extended attributes</a>: 512</li>

<li>Maximum <a href="Fork_(filesystem)" class="mw-redirect" title="Fork (filesystem)">data streams</a>: 10</li>

<li>Support for different name spaces: <a href="Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a> <a href="Long_filename" title="Long filename">Long names</a> (a.k.a. <a href="OS/2" title="OS/2">OS/2</a> namespace), <a href="Unix" title="Unix">Unix</a>, <a href="Apple_Macintosh" class="mw-redirect" title="Apple Macintosh">Apple Macintosh</a></li>

<li>Support for restoring deleted files (salvage)</li>

<li>Support for journaling (Novell <i>Transaction Tracking System</i> a.k.a. <i>TTS</i>)</li>

<li>Support for block suballocation, starting in NetWare 4.x</li></ul>

<p>For larger files, the file system utilized a performance feature named <i>Turbo FAT</i>.

</p><p>Transparent file compression was also supported, although this had a significant impact on the performance of file serving.

</p><p>Every name space requires its own separate directory entry for each file. While the maximum number of directory entries is 16,000,000, two resident name spaces would reduce the usable maximum number of directory entries to 8,000,000, and three to 5,333,333.

</p><p>16-bit NWFS could handle volumes of up to 256 <a href="Megabyte" title="Megabyte">MB</a>. However, its only name-space support was a dedicated <a href="Application_programming_interface" class="mw-redirect" title="Application programming interface">API</a> to handle Macintosh clients.

</p><p>The Netware File System supported native <a href="Standard_RAID_levels#RAID_0" title="Standard RAID levels">RAID 0</a> and <a href="Standard_RAID_levels#RAID_1" title="Standard RAID levels">RAID 1</a> capabilities long before RAID systems came into use on personal computers. Disk mirroring and duplexing were basic features of the file system, and NWFS also supported multi-segmented volumes, and round-robin reads, much like RAID 0 and RAID 1 does today.

</p>

<ul><li><a href="List_of_file_systems" title="List of file systems">List of file systems</a></li>

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

<li><a href="Transaction-Safe_FAT_File_System" title="Transaction-Safe FAT File System">Transaction-Safe FAT File System</a></li></ul>

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

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</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://gitlab.com/jeffmerkey/netware-file-system">"netware-file-system · GitLab"</a>. <i>GitLab</i>. 2024-04-03<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-04-03</span></span>.</cite></span>

</li>

<li id="cite_note-GitHub_2019_m762-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-GitHub_2019_m762_2-0">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/jeffmerkey/netware-file-system">"netware-file-system: Open Source NetWare SMP File System for Linux, Windows, and DOS"</a>. <i>GitHub</i>. 2019-05-30<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-04-03</span></span>.</cite></span>

</li>

</ol></div></div>

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

<ul><li><a rel="nofollow" class="external text" href="http://www.novell.com/de-de/documentation/nw6p/?sos__enu/data/h0wbzsqh.html">Using the Transaction Tracking System</a></li></ul>

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</style><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="Macintosh_File_System" title="Macintosh File System">Macintosh File System</a></li>

<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="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 2024-12-04" href="https://en.wikipedia.org/wiki/?title=NetWare_File_System&oldid=1261222416">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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