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

       ntfsresize - resize an NTFS filesystem without data loss

       ntfsresize [OPTIONS] --info(-mb-only) DEVICE
       ntfsresize [OPTIONS] [--size SIZE[k|M|G]] DEVICE

       The  ntfsresize program safely resizes Windows XP, Windows Server 2003,
       Windows 2000, Windows NT4 and Longhorn NTFS  filesystems  without  data
       loss.  All  NTFS versions are supported, used by 32-bit and 64-bit Win-
       dows.  Defragmentation is NOT required prior to  resizing  because  the
       program  can  relocate  any data if needed, without risking data integ-

       Ntfsresize can be used to shrink or enlarge any NTFS filesystem located
       on  an  unmounted DEVICE (usually a disk partition). The new filesystem
       will fit in a DEVICE whose desired size is SIZE bytes.  The SIZE param-
       eter  may  have  one of the optional modifiers k, M, G, which means the
       SIZE parameter is given in  kilo-,  mega-  or  gigabytes  respectively.
       Ntfsresize  conforms  to the SI, ATA, IEEE standards and the disk manu-
       facturers by using k=10^3, M=10^6 and G=10^9.

       If both --info(-mb-only) and --size are omitted then the NTFS  filesys-
       tem will be enlarged to match the underlying DEVICE size.

       To  resize  a  filesystem  on  a  partition,  you  must resize BOTH the
       filesystem and the partition by editing  the  partition  table  on  the
       disk.  Similarly  to other command line filesystem resizers, ntfsresize
       doesn't manipulate the size of the partitions, hence  to  do  that  you
       must  use  a disk partitioning tool as well, for example fdisk(8).  Al-
       ternatively you could use one of the many  user  friendly  partitioners
       that  uses  ntfsresize internally, like Mandriva's DiskDrake, QTParted,
       SUSE/Novell's YaST Partitioner, IBM's EVMS, GParted or  Debian/Ubuntu's

       IMPORTANT!   It's  a good practice making REGULAR BACKUPS of your valu-
       able data, especially before using ANY partitioning tools. To do so for
       NTFS,  you  could use ntfsclone(8).  Don't forget to save the partition
       table as well!

       If you wish to shrink an NTFS partition, first use ntfsresize to shrink
       the  size  of the filesystem. Then you could use fdisk(8) to shrink the
       size of the partition by deleting the partition and recreating it  with
       the  smaller size.  Do not make the partition smaller than the new size
       of NTFS otherwise you won't be able to boot. If  you  did  so  notwith-
       standing then just recreate the partition to be as large as NTFS.

       To  enlarge  an NTFS filesystem, first you must enlarge the size of the
       underlying partition. This can be done using fdisk(8) by  deleting  the
       partition  and recreating it with a larger size.  Make sure it will not
       overlap with another  existing  partition.   You  may  enlarge  upwards
       (first  sector unchanged) or downwards (last sector unchanged), but you
       may not enlarge at both ends in a single step.  If you merge  two  NTFS
       partitions,  only  one of them can be expanded to the merged partition.
       After you have enlarged the partition, you may use  ntfsresize  to  en-
       large the size of the filesystem.

       When  recreating  the  partition by a disk partitioning tool, make sure
       you create it at the same starting sector and with the  same  partition
       type as before.  Otherwise you won't be able to access your filesystem.
       Use the 'u' fdisk command to switch to the reliable  sector  unit  from
       the default cylinder one.

       Also  make  sure  you set the bootable flag for the partition if it ex-
       isted before. Failing to do so you might not be able to boot your  com-
       puter from the disk.

       Below  is a summary of all the options that ntfsresize 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  command,  e.g.
       -fv  is  equivalent to -f -v.  Long named options can be abbreviated to
       any unique prefix of their name.

       -c, --check
              By using this option ntfsresize will only check  the  device  to
              ensure that it is ready to be resized. If not, it will print any
              errors detected.   If  the  device  is  fine,  nothing  will  be

       -i, --info
              By using this option without --expand, ntfsresize will determine
              the theoretically smallest shrunken filesystem  size  supported.
              Most  of  the  time  the result is the space already used on the
              filesystem. Ntfsresize will refuse shrinking to a  smaller  size
              than  what  you got by this option and depending on several fac-
              tors it might be unable to shrink very close to this theoretical
              size.  Although  the  integrity  of your data should be never in
              risk, it's still strongly recommended to make a test run by  us-
              ing the --no-action option before real resizing.

              Practically  the  smallest  shrunken size generally is at around
              "used space" + (20-200 MB). Please also take into  account  that
              Windows  might  need  about  50-100  MB  free space left to boot

              If used in association with option --expand, ntfsresize will de-
              termine  the  smallest downwards expansion size and the possible
              increments to the size. These are exact byte counts  which  must
              not be rounded.  This option may be used after the partition has
              been expanded provided the upper bound has not been changed.

              This option never causes any changes to the filesystem, the par-
              tition is opened read-only.

       -m, --info-mb-only
              Like  the info option, only print out the shrinkable size in MB.
              Print nothing if the shrink size is the  same  as  the  original
              size  (in  MB).   This option cannot be used in association with
              option --expand.

       -s, --size SIZE[k|M|G]
              Resize  filesystem  to  fit  in  a  partition  whose   size   is
              SIZE[k|M|G]  bytes by shifting its end and keeping its beginning
              unchanged. The filesystem size is set to be at least one  sector
              smaller than the partition.  The optional modifiers k, M, G mean
              the SIZE parameter is given in kilo-, mega- or gigabytes respec-
              tively.   Conforming  to  standards,  k=10^3, M=10^6 and G=10^9.
              ki=2^10, Mi=2^20 and Gi=2^30 are also allowed. Use  this  option
              with --no-action first.

       -x, --expand
              Expand  the  filesystem  to the current partition size, shifting
              down its beginning and keeping its end unchanged.  The  metadata
              is  recreated  in  the  expanded space and no user data is relo-
              cated. This is incompatible with option -s (or --size)  and  can
              only  be  made if the expanded space is an exact multiple of the
              cluster size. It must also be large enough to hold the new meta-

              If  the  expansion is interrupted for some reason (power outage,
              etc), you may restart the resizing, as  the  original  data  and
              metadata have been kept unchanged.

              Note : expanding a Windows system partition and filesystem down-
              wards may lead to the registry or some files  not  matching  the
              new  system layout, or to some important files being located too
              far from the beginning of the partition, thus making Windows not

       -f, --force
              Forces  ntfsresize  to  proceed with the resize operation either
              without prompting for an explicit acceptance, or if the filesys-
              tem  is  marked  for  consistency check. Double the option (-ff,
              --force --force) to avoid prompting even if the file  system  is
              marked for check.

              Please  note, ntfsresize always marks the filesystem for consis-
              tency check before a real resize operation and  it  leaves  that
              way for extra safety. Thus if NTFS was marked by ntfsresize then
              it's safe to use this option. If  you  need  to  resize  several
              times  without  booting into Windows between each resizing steps
              then you must use this option.

       -n, --no-action
              Use this option to make a test run before doing the real  resize
              operation.   Volume will be opened read-only and ntfsresize dis-
              plays what it would do if it  were  to  resize  the  filesystem.
              Continue with the real resizing only if the test run passed.

       -b, --bad-sectors
              Support  disks  having  hardware  errors, bad sectors with those
              ntfsresize would refuse to work by default.

              Prior using this option, it's strongly  recommended  to  make  a
              backup  by  ntfsclone(8) using the --rescue option, then running
              'chkdsk /f /r volume:' on Windows from the command line. If  the
              disk  guarantee  is still valid then replace it.  It's defected.
              Please also note, that no software  can  repair  these  type  of
              hardware errors. The most what they can do is to work around the
              permanent defects.

              This option doesn't have any effect if the disk is flawless.

       -P, --no-progress-bar
              Don't show progress bars.

       -v, --verbose
              More output.

       -V, --version
              Print the version number of ntfsresize and exit.

       -h, --help
              Display help and exit.

       The exit code is 0 on success, non-zero otherwise.

       No reliability problem is known.  If you find  a  bug  please  send  an
       email describing the problem to the development team at:

       There  are  a  few very rarely met restrictions at present: filesystems
       having unknown bad sectors, relocation of the first MFT extent and  re-
       sizing into the middle of a $MFTMirr extent aren't supported yet. These
       cases are detected and resizing is restricted to a  safe  size  or  the
       closest safe size is displayed.

       Ntfsresize schedules an NTFS consistency check and after the first boot
       into Windows you must see chkdsk running on a blue background. This  is
       intentional  and  no need to worry about it.  Windows may force a quick
       reboot after the consistency check.  Moreover after repartitioning your
       disk  and  depending on the hardware configuration, the Windows message
       System Settings Change may also appear. Just acknowledge it and  reboot

       The  disk geometry handling semantic (HDIO_GETGEO ioctl) has changed in
       an incompatible way in Linux 2.6 kernels and this triggered  multitudi-
       nous  partition  table corruptions resulting in unbootable Windows sys-
       tems, even if NTFS was consistent, if parted(8) was  involved  in  some
       way.  This  problem was often attributed to ntfsresize but in fact it's
       completely independent of NTFS  thus  ntfsresize.  Moreover  ntfsresize
       never  touches the partition table at all. By changing the 'Disk Access
       Mode' to LBA in the BIOS makes booting work again, most  of  the  time.
       You  can  find more information about this issue in the Troubleshooting
       section of the below referred Ntfsresize FAQ.

       ntfsresize was written by Szabolcs Szakacsits, with contributions  from
       Anton  Altaparmakov  and  Richard  Russon.  It was ported to ntfs-3g by
       Erik Larsson and Jean-Pierre Andre.

       Many thanks to Anton Altaparmakov and Richard Russon for  libntfs,  the
       excellent  documentation  and  comments,  to Gergely Madarasz, Dewey M.
       Sasser and Miguel Lastra and his colleagues at the University of Grana-
       da  for  their continuous and highly valuable help, furthermore to Erik
       Meade, Martin Fick, Sandro Hawke, Dave Croal, Lorrin Nelson, Geert Hen-
       drickx,  Robert Bjorkman and Richard Burdick for beta testing the relo-
       cation support, to  Florian  Eyben,  Fritz  Oppliger,  Richard  Ebling,
       Sid-Ahmed  Touati,  Jan  Kiszka, Benjamin Redelings, Christopher Haney,
       Ryan Durk, Ralf Beyer, Scott Hansen, Alan Evans for the valued  contri-
       butions  and  to  Theodore  Ts'o whose resize2fs(8) man page originally
       formed the basis of this page.

       ntfsresize is part of the ntfs-3g package and is available from:

       fdisk(8),  cfdisk(8),  sfdisk(8),  parted(8),  evms(8),   ntfsclone(8),
       mkntfs(8), ntfsprogs(8)

ntfs-3g 2017.3.23AR.3              July 2013                     NTFSRESIZE(8)
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