<root
FILESYSTEMS(5)                      Linux Programmer's Manual                      FILESYSTEMS(5)

NAME
       filesystems  -  Linux  filesystem types: ext, ext2, ext3, ext4, hpfs, iso9660, JFS, minix,
       msdos, ncpfs nfs, ntfs, proc, Reiserfs, smb, sysv, umsdos, vfat, XFS, xiafs,

DESCRIPTION
       When, as is customary, the proc filesystem is mounted on /proc, you can find in  the  file
       /proc/filesystems  which  filesystems your kernel currently supports; see proc(5) for more
       details.  If you need a currently unsupported filesystem, insert the corresponding  module
       or recompile the kernel.

       In order to use a filesystem, you have to mount it; see mount(8).

       Below  a short description of the available or historically available filesystems in Linux
       kernel See kernel documentation  for  a  comprehensive  description  of  all  options  and
       limitations.

       ext       is  an  elaborate  extension  of  the  minix filesystem.  It has been completely
                 superseded by the second version of the extended filesystem (ext2) and has  been
                 removed from the kernel (in 2.1.21).

       ext2      is the high performance disk filesystem used by Linux for fixed disks as well as
                 removable media.  The second extended filesystem was designed as an extension of
                 the extended filesystem (ext).  See ext2 (5).

       ext3      is  a  journaling version of the ext2 filesystem.  It is easy to switch back and
                 forth between ext2 and ext3.  See ext3 (5).

       ext4      is a set of upgrades to ext3 including substantial performance  and  reliability
                 enhancements,  plus  large increases in volume, file, and directory size limits.
                 See ext4 (5).

       hpfs      is the High Performance Filesystem, used in OS/2.  This filesystem is  read-only
                 under Linux due to the lack of available documentation.

       iso9660   is a CD-ROM filesystem type conforming to the ISO 9660 standard.

                 High Sierra
                        Linux  supports  High  Sierra, the precursor to the ISO 9660 standard for
                        CD-ROM filesystems.  It is automatically recognized  within  the  iso9660
                        filesystem support under Linux.

                 Rock Ridge
                        Linux  also supports the System Use Sharing Protocol records specified by
                        the Rock Ridge Interchange Protocol.  They are used to  further  describe
                        the  files  in  the  iso9660  filesystem  to  a  UNIX  host,  and provide
                        information such as  long  filenames,  UID/GID,  POSIX  permissions,  and
                        devices.   It  is  automatically recognized within the iso9660 filesystem
                        support under Linux.

       JFS       is a journaling filesystem, developed by IBM, that was integrated into Linux  in
                 kernel 2.4.24.

       minix     is  the  filesystem  used  in the Minix operating system, the first to run under
                 Linux.  It has a number of shortcomings, including a 64MB partition size  limit,
                 short filenames, and a single timestamp.  It remains useful for floppies and RAM
                 disks.

       msdos     is the filesystem  used  by  DOS,  Windows,  and  some  OS/2  computers.   msdos
                 filenames can be no longer than 8 characters, followed by an optional period and
                 3 character extension.

       ncpfs     is a network filesystem that supports the NCP protocol, used by Novell NetWare.

                 To  use  ncpfs,  you  need   special   programs,   which   can   be   found   at
                 ⟨ftp://linux01.gwdg.de/pub/ncpfs⟩.

       nfs       is the network filesystem used to access disks located on remote computers.

       ntfs      replaces  Microsoft Window's FAT filesystems (VFAT, FAT32).  It has reliability,
                 performance, and space-utilization enhancements plus features like  ACLs,  jour‐
                 naling, encryption, and so on.

       proc      is  a  pseudo filesystem which is used as an interface to kernel data structures
                 rather than reading and interpreting /dev/kmem.  In particular, its files do not
                 take disk space.  See proc(5).

       Reiserfs  is  a  journaling  filesystem, designed by Hans Reiser, that was integrated into
                 Linux in kernel 2.4.1.

       smb       is a network filesystem that supports the SMB  protocol,  used  by  Windows  for
                 Workgroups, Windows NT, and Lan Manager.

                 To  use  smb  fs,  you  need  a special mount program, which can be found in the
                 ksmbfs  package,  found  at  ⟨ftp://sunsite.unc.edu/pub/Linux/system/Filesystems
                 /smbfs⟩.

       sysv      is  an  implementation  of the SystemV/Coherent filesystem for Linux.  It imple‐
                 ments all of Xenix FS, SystemV/386 FS, and Coherent FS.

       umsdos    is an extended DOS filesystem used by Linux.  It adds capability for long  file‐
                 names,  UID/GID,  POSIX  permissions,  and  special files (devices, named pipes,
                 etc.)  under the DOS filesystem, without sacrificing compatibility with DOS.

       vfat      is an extended DOS filesystem used by Microsoft Windows95 and Windows NT.   vfat
                 adds the capability to use long filenames under the MSDOS filesystem.

       XFS       is  a journaling filesystem, developed by SGI, that was integrated into Linux in
                 kernel 2.4.20.

       xiafs     was designed and implemented to be a stable, safe filesystem  by  extending  the
                 Minix  filesystem  code.   It provides the basic most requested features without
                 undue complexity.  The xiafs filesystem is no longer actively developed or main‐
                 tained.  It was removed from the kernel in 2.1.21.

SEE ALSO
       ext2(5), ext3(5), ext4(5), proc(5), fsck(8), mkfs(8), mount(8)

COLOPHON
       This  page  is  part of release 4.04 of the Linux man-pages project.  A description of the
       project, information about reporting bugs, and the latest version of  this  page,  can  be
       found at http://www.kernel.org/doc/man-pages/.

Linux                                       2015-03-29                             FILESYSTEMS(5)

Go-to-top  




Designed by SanjuD(@ngineerbabu)