Reiserfs, XFS, JFS, xia, msdos, umsdos, vfat, ntfs, 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).
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
timestamp, etc. It remains useful for floppies and RAM
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been completely superseded by the second version of the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). ext2 offers the best performance (in terms
of speed and CPU usage) of the filesystems supported under
ext3 is a journaling version of the ext2 filesystem. It is easy
to switch back and forth between ext2 and ext3.
ext4 is a set of upgrades to ext3 including substantial
performance and reliability enhancements, plus large
increases in volume, file, and directory size limits.
Reiserfs is a journaling filesystem, designed by Hans Reiser, that was
integrated into Linux in kernel 2.4.1.
XFS is a journaling filesystem, developed by SGI, that was
integrated into Linux in kernel 2.4.20.
JFS is a journaling filesystem, developed by IBM, that was
integrated into Linux in kernel 2.4.24.
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
ntfs replaces Microsoft Window's FAT filesystems (VFAT, FAT32).
It has reliability, performance, and space-utilization
enhancements plus features like ACLs, journaling, 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.
iso9660 is a CD-ROM filesystem type conforming to the ISO 9660
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.
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
hpfs is the High Performance Filesystem, used in OS/2. This
filesystem is read-only under Linux due to the lack of
sysv is an implementation of the SystemV/Coherent filesystem for
Linux. It implements all of Xenix FS, SystemV/386 FS, and
nfs is the network filesystem used to access disks located on
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
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
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