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MKFS(8)                               System Administration                               MKFS(8)



NAME
       mkfs - build a Linux filesystem

SYNOPSIS
       mkfs [options] [-t type] [fs-options] device [size]

DESCRIPTION
       mkfs  is used to build a Linux filesystem on a device, usually a hard disk partition.  The
       device argument is either the device name (e.g.  /dev/hda1, /dev/sdb2), or a regular  file
       that  shall  contain the filesystem.  The size argument is the number of blocks to be used
       for the filesystem.

       The exit code returned by mkfs is 0 on success and 1 on failure.

       In actuality, mkfs is simply a front-end for the various filesystem builders (mkfs.fstype)
       available  under  Linux.   The  filesystem-specific builder is searched for in a number of
       directories, like perhaps /sbin, /sbin/fs, /sbin/fs.d, /etc/fs, /etc (the precise list  is
       defined  at  compile  time  but  at least contains /sbin and /sbin/fs), and finally in the
       directories listed in the PATH environment variable.  Please see  the  filesystem-specific
       builder manual pages for further details.

OPTIONS
       -t, --type type
              Specify the type of filesystem to be built.  If not specified, the default filesys-
              tem type (currently ext2) is used.

       fs-options
              Filesystem-specific options to be passed to the real filesystem builder.   Although
              not guaranteed, the following options are supported by most filesystem builders.

       -V, --verbose
              Produce  verbose  output,  including all filesystem-specific commands that are exe-
              cuted.  Specifying this option more than once inhibits execution of any filesystem-
              specific commands.  This is really only useful for testing.

       -V, --version
              Display  version information and exit.  (Option -V will display version information
              only when it is the only parameter, otherwise it will work as --verbose.)

       -h, --help
              Display help and exit.

BUGS
       All generic options must precede and not be  combined  with  filesystem-specific  options.
       Some filesystem-specific programs do not support the -V (verbose) option, nor return mean-
       ingful exit codes.  Also, some filesystem-specific programs do  not  automatically  detect
       the device size and require the size parameter to be specified.

AUTHORS
       David Engel (david AT ods.com)
       Fred N. van Kempen (waltje AT uwalt.org)
       Ron Sommeling (sommel AT sci.nl)
       The manual page was shamelessly adapted from Remy Card's version for the ext2 filesystem.

SEE ALSO
       fs(5),   badblocks(8),   fsck(8),   mkdosfs(8),   mke2fs(8),   mkfs.bfs(8),  mkfs.ext2(8),
       mkfs.ext3(8),  mkfs.ext4(8),  mkfs.minix(8),  mkfs.msdos(8),  mkfs.vfat(8),   mkfs.xfs(8),
       mkfs.xiafs(8)

AVAILABILITY
       The  mkfs  command  is part of the util-linux package and is available from ftp://ftp.ker-
       nel.org/pub/linux/utils/util-linux/.



util-linux                                  June 2011                                     MKFS(8)

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