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MKNTFS(8)                            System Manager's Manual                            MKNTFS(8)

NAME
       mkntfs - create an NTFS file system

SYNOPSIS
       mkntfs [options] device [number-of-sectors]

       mkntfs  [  -C  ]  [  -c  cluster-size ] [ -F ] [ -f ] [ -H heads ] [ -h ] [ -I ] [ -L vol‐
       ume-label ] [ -l ] [ -n ] [ -p part-start-sect ] [ -Q ] [ -q ] [ -S sectors-per-track ]  [
       -s sector-size ] [ -T ] [ -U ] [ -V ] [ -v ] [ -z mft-zone-multiplier ] [ --debug ] device
       [ number-of-sectors ]

DESCRIPTION
       mkntfs is used to create an NTFS file system on a device (usually  a  disk  partition)  or
       file.   device  is  the  special  file  corresponding to the device (e.g /dev/hdXX).  num‐
       ber-of-sectors is the number of sectors on the device. If  omitted,  mkntfs  automagically
       figures the file system size.

OPTIONS
       Below  is  a  summary of all the options that mkntfs accepts.  Nearly all options have two
       equivalent names.  The short name is preceded by - and the long name is  preceded  by  --.
       Any single letter options, that don't take an argument, can be combined into a single com‐
       mand, e.g.  -fv is equivalent to -f -v.  Long named options  can  be  abbreviated  to  any
       unique prefix of their name.

   Basic options
       -f, --fast, -Q, --quick
              Perform quick (fast) format. This will skip both zeroing of the volume and bad sec‐
              tor checking.

       -L, --label STRING
              Set the volume label for the filesystem.

       -C, --enable-compression
              Enable compression on the volume.

       -n, --no-action
              Causes mkntfs to not actually create a filesystem, but display what it would do  if
              it  were to create a filesystem. All steps of the format are carried out except the
              actual writing to the device.

   Advanced options
       -c, --cluster-size BYTES
              Specify the size of clusters in bytes. Valid cluster size values are powers of two,
              with  at  least  256,  and at most 65536 bytes per cluster. If omitted, mkntfs uses
              4096 bytes as the default cluster size.

              Note that the default cluster size is set to be at least equal to the  sector  size
              as  a  cluster cannot be smaller than a sector. Also, note that values greater than
              4096 have the side effect that compression is disabled on the volume (due to  limi‐
              tations in the NTFS compression algorithm currently in use by Windows).

       -s, --sector-size BYTES
              Specify  the size of sectors in bytes. Valid sector size values are 256, 512, 1024,
              2048 and 4096 bytes per sector. If omitted, mkntfs attempts to determine  the  sec‐
              tor-size automatically and if that fails a default of 512 bytes per sector is used.

       -p, --partition-start SECTOR
              Specify the partition start sector. The maximum is 4294967295 (2^32-1). If omitted,
              mkntfs attempts to determine part-start-sect automatically and if that fails or the
              value is oversized, a default of 0 is used. The partition is usable despite a wrong
              value, however note that a correct part-start-sect is required for  Windows  to  be
              able to boot from the created volume.

       -H, --heads NUM
              Specify  the  number  of  heads.  The maximum is 65535 (0xffff). If omitted, mkntfs
              attempts to determine the number of heads automatically and if that fails a default
              of  0  is used. Note that heads is required for Windows to be able to boot from the
              created volume.

       -S, --sectors-per-track NUM
              Specify the number of sectors per track. The maximum is 65535 (0xffff). If omitted,
              mkntfs  attempts  to determine the number of sectors-per-track automatically and if
              that fails a default of 0 is used. Note that sectors-per-track is required for Win‐
              dows to be able to boot from the created volume.

       -z, --mft-zone-multiplier NUM
              Set  the  MFT  zone multiplier, which determines the size of the MFT zone to use on
              the volume. The MFT zone is the area at the beginning of the  volume  reserved  for
              the  master file table (MFT), which stores the on disk inodes (MFT records).  It is
              noteworthy that small files are stored entirely within  the  inode;  thus,  if  you
              expect  to use the volume for storing large numbers of very small files, it is use‐
              ful to set the zone multiplier to a higher  value.  Note,  that  the  MFT  zone  is
              resized  on  the fly as required during operation of the NTFS driver but choosing a
              good value will reduce fragmentation. Valid values are 1, 2, 3 and  4.  The  values
              have the following meaning:

              ┌────────────────────────────────┐
              │MFT zone     MFT zone size      │
              │multiplier   (% of volume size) │
              │    1        12.5% (default)    │
              │    2        25.0%              │
              │    3        37.5%              │
              │    4        50.0%              │
              └────────────────────────────────┘

       -T, --zero-time
              Fake  the  time to be 00:00:00 UTC, Jan 1, 1970 instead of the current system time.
              This is only really useful for debugging purposes.

       -U, --with-uuid
              Generate a random volume UUID.

       -I, --no-indexing
              Disable content indexing on the volume. (This is only meaningful  on  Windows  2000
              and  later. Windows NT 4.0 and earlier ignore this as they do not implement content
              indexing at all.)

       -F, --force
              Force mkntfs to run, even if the specified device is not a block special device, or
              appears to be mounted.

   Output options
       -q, --quiet
              Quiet  execution;  only errors are written to stderr, no output to stdout occurs at
              all. Useful if mkntfs is run in a script.

       -v, --verbose
              Verbose execution.

       --debug
              Really verbose execution; includes the verbose output from the -v option as well as
              additional output useful for debugging mkntfs.

   Help options
       -V, --version
              Print the version number of mkntfs and exit.

       -l, --license
              Print the licensing information of mkntfs and exit.

       -h, --help
              Show a list of options with a brief description of each one.

KNOWN ISSUES
       When applying chkdsk to a file system, it sometimes throws a warning "Correcting errors in
       the uppercase file." The uppercase file is created while formatting  and  it  defines  the
       mapping  of  lower  case   characters  to upper case ones, as needed to sort file names in
       directories. The warning means that the uppercase file defined on the file system  is  not
       the same as the one used by the Windows OS on which chkdsk is running, and this may happen
       because newer versions of Windows take into account new characters defined by the  Unicode
       consortium.

       Currently,  mkntfs  creates  the  uppercase  table so that no warning is thrown by Windows
       Vista, Windows 7 or Windows 8. A warning may be thrown by other Windows  versions,  or  if
       chkdsk is applied in succession on different Windows versions.

BUGS
       If you find a bug please send an email describing the problem to the development team:
       ntfs-3g-devel@lists.sf.net

AUTHORS
       mkntfs was written by Anton Altaparmakov, Richard Russon, Erik Sornes and Szabolcs Szakac‐
       sits.  It was ported to ntfs-3g by Erik Larsson and Jean-Pierre Andre.

AVAILABILITY
       mkntfs is part of the ntfs-3g package and is available from:
       http://www.tuxera.com/community/

SEE ALSO
       badblocks(8), ntfsprogs(8)

ntfs-3g 2015.3.14AR.1                      January 2006                                 MKNTFS(8)

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