{ "mode": "info", "parameter": "filesystems", "section": "", "url": "https://www.chedong.com/phpMan.php/info/filesystems/json", "generated": "2026-08-04T17:30:39Z", "sections": { "NAME": { "content": "filesystems - Linux filesystem types: ext, ext2, ext3, ext4, hpfs,\niso9660, JFS, minix, msdos, ncpfs nfs, ntfs, proc, Reiserfs, smb, sysv,\numsdos, vfat, XFS, xiafs\n", "subsections": [] }, "DESCRIPTION": { "content": "When, as is customary, the proc filesystem is mounted on /proc, you can\nfind in the file /proc/filesystems which filesystems your kernel\ncurrently supports; see proc(5) for more details. There is also a\nlegacy sysfs(2) system call (whose availability is controlled by the\nCONFIGSYSFSSYSCALL kernel build configuration option since Linux\n3.15) that enables enumeration of the currently available filesystem\ntypes regardless of /proc availability and/or sanity.\n\nIf you need a currently unsupported filesystem, insert the\ncorresponding kernel module or recompile the kernel.\n\nIn order to use a filesystem, you have to mount it; see mount(2) and\nmount(8).\n\nThe following list provides a short description of the available or\nhistorically available filesystems in the Linux kernel. See the kernel\ndocumentation for a comprehensive description of all options and\nlimitations.\n\next is an elaborate extension of the minix filesystem. It has\nbeen completely superseded by the second version of the\nextended filesystem (ext2) and has been removed from the\nkernel (in 2.1.21).\n\next2 is the high performance disk filesystem used by Linux for\nfixed disks as well as removable media. The second extended\nfilesystem was designed as an extension of the extended\nfilesystem (ext). See ext2(5).\n\next3 is a journaling version of the ext2 filesystem. It is easy\nto switch back and forth between ext2 and ext3. See ext3(5).\n\next4 is a set of upgrades to ext3 including substantial\nperformance and reliability enhancements, plus large\nincreases in volume, file, and directory size limits. See\next4(5).\n\nhpfs is the High Performance Filesystem, used in OS/2. This\nfilesystem is read-only under Linux due to the lack of\navailable documentation.\n\niso9660 is a CD-ROM filesystem type conforming to the ISO 9660\nstandard.\n\nHigh Sierra\nLinux supports High Sierra, the precursor to the ISO\n9660 standard for CD-ROM filesystems. It is\nautomatically recognized within the iso9660 filesystem\nsupport under Linux.\n\nRock Ridge\nLinux also supports the System Use Sharing Protocol\nrecords specified by the Rock Ridge Interchange\nProtocol. They are used to further describe the files\nin the iso9660 filesystem to a UNIX host, and provide\ninformation such as long filenames, UID/GID, POSIX\npermissions, and devices. It is automatically\nrecognized within the iso9660 filesystem support under\nLinux.\n\nJFS is a journaling filesystem, developed by IBM, that was\nintegrated into Linux in kernel 2.4.24.\n\nminix is the filesystem used in the Minix operating system, the\nfirst to run under Linux. It has a number of shortcomings,\nincluding a 64 MB partition size limit, short filenames, and\na single timestamp. It remains useful for floppies and RAM\ndisks.\n\nmsdos is the filesystem used by DOS, Windows, and some OS/2\ncomputers. msdos filenames can be no longer than 8\ncharacters, followed by an optional period and 3 character\nextension.\n\nncpfs is a network filesystem that supports the NCP protocol, used\nby Novell NetWare. It was was removed from the kernel in\n4.17.\n\nTo use ncpfs, you need special programs, which can be found\nat .\n\nnfs is the network filesystem used to access disks located on re-\nmote computers.\n\nntfs is the filesystem native to Microsoft Windows NT, supporting\nfeatures like ACLs, journaling, encryption, and so on.\n\nproc is a pseudo filesystem which is used as an interface to ker-\nnel data structures rather than reading and interpreting\n/dev/kmem. In particular, its files do not take disk space.\nSee proc(5).\n\nReiserfs is a journaling filesystem, designed by Hans Reiser, that was\nintegrated into Linux in kernel 2.4.1.\n\nsmb is a network filesystem that supports the SMB protocol, used\nby Windows for Workgroups, Windows NT, and Lan Manager. See\n.\n\nsysv is an implementation of the System V/Coherent filesystem for\nLinux. It implements all of Xenix FS, System V/386 FS, and\nCoherent FS.\n\numsdos is an extended DOS filesystem used by Linux. It adds capa-\nbility for long filenames, UID/GID, POSIX permissions, and\nspecial files (devices, named pipes, etc.) under the DOS\nfilesystem, without sacrificing compatibility with DOS.\n\ntmpfs is a filesystem whose contents reside in virtual memory.\nSince the files on such filesystems typically reside in RAM,\nfile access is extremely fast. See tmpfs(5).\n\nvfat is an extended FAT filesystem used by Microsoft Windows95 and\nWindows NT. vfat adds the capability to use long filenames\nunder the MSDOS filesystem.\n\nXFS is a journaling filesystem, developed by SGI, that was inte-\ngrated into Linux in kernel 2.4.20.\n\nxiafs was designed and implemented to be a stable, safe filesystem\nby extending the Minix filesystem code. It provides the ba-\nsic most requested features without undue complexity. The\nxiafs filesystem is no longer actively developed or main-\ntained. It was removed from the kernel in 2.1.21.\n", "subsections": [] }, "SEE ALSO": { "content": "fuse(4), btrfs(5), ext2(5), ext3(5), ext4(5), nfs(5), proc(5),\nsysfs(5), tmpfs(5), xfs(5), fsck(8), mkfs(8), mount(8)\n", "subsections": [] }, "COLOPHON": { "content": "This page is part of release 5.10 of the Linux man-pages project. A\ndescription of the project, information about reporting bugs, and the\nlatest version of this page, can be found at\nhttps://www.kernel.org/doc/man-pages/.\n\nLinux 2020-12-21 FILESYSTEMS(5)", "subsections": [] } }, "summary": "filesystems - Linux filesystem types: ext, ext2, ext3, ext4, hpfs, iso9660, JFS, minix, msdos, ncpfs nfs, ntfs, proc, Reiserfs, smb, sysv, umsdos, vfat, XFS, xiafs", "flags": [], "examples": [], "see_also": [ { "name": "fuse", "section": "4", "url": "https://www.chedong.com/phpMan.php/man/fuse/4/json" }, { "name": "btrfs", "section": "5", "url": "https://www.chedong.com/phpMan.php/man/btrfs/5/json" }, { "name": "ext2", "section": "5", "url": "https://www.chedong.com/phpMan.php/man/ext2/5/json" }, { "name": "ext3", "section": "5", "url": "https://www.chedong.com/phpMan.php/man/ext3/5/json" }, { "name": "ext4", "section": "5", "url": "https://www.chedong.com/phpMan.php/man/ext4/5/json" }, { "name": "nfs", "section": "5", "url": "https://www.chedong.com/phpMan.php/man/nfs/5/json" }, { "name": "proc", "section": "5", "url": "https://www.chedong.com/phpMan.php/man/proc/5/json" }, { "name": "sysfs", "section": "5", "url": "https://www.chedong.com/phpMan.php/man/sysfs/5/json" }, { "name": "tmpfs", "section": "5", "url": "https://www.chedong.com/phpMan.php/man/tmpfs/5/json" }, { "name": "xfs", "section": "5", "url": "https://www.chedong.com/phpMan.php/man/xfs/5/json" }, { "name": "fsck", "section": "8", "url": "https://www.chedong.com/phpMan.php/man/fsck/8/json" }, { "name": "mkfs", "section": "8", "url": "https://www.chedong.com/phpMan.php/man/mkfs/8/json" }, { "name": "mount", "section": "8", "url": "https://www.chedong.com/phpMan.php/man/mount/8/json" } ] }