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

       filesystems  -  Linux  filesystem types: minix, ext, ext2, ext3, xia, msdos, umsdos, vfat,
       proc, nfs, iso9660, hpfs, sysv, smb, ncpfs

       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.   If  you need a
       currently unsupported one, insert the corresponding module or recompile the kernel.

       In order to use a filesystem, you have to mount it, see mount(8) for  the  mount  command,
       and for the available mount options.

       Below a short description of a few of the available filesystems.

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

       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	      superseded by the second version of the extended filesystem  (ext2)  and	has  been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  file  system  (ext).   ext2 offers the best performance (in terms of
	      speed and CPU usage) of the filesystems supported under Linux.

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

       ext3   is  a journaling version of the ext2 filesystem.	ext3 offers the most complete set
	      of journaling options available among journaling filesystems.

       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 xia filesystem is no longer actively developed or maintained.   It
	      was removed from the kernel in 2.1.21.

       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

       umsdos is  an  extended	DOS  filesystem  used  by  Linux.   It	adds  capability for long
	      filenames, 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.

       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).

	      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.

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

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

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

       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.

       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

       proc(5), fsck(8), mkfs(8), mount(8)

					    2001-12-07				   FILESYSTEMS(5)
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