ntfsresize


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

DESCRIPTION
       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
       integrity.

       Ntfsresize can be used to shrink or enlarge any NTFS filesystem located
       on  an  unmounted DEVICE (usually a disk partition). The new filesystem
       will have SIZE bytes.  The SIZE parameter 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 manufacturers 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 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).
       Alternatively 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
       Partman.

       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!

   Shrinkage
       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.

   Enlargement
       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 an other 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
       existed before. Failing to do so you might not be  able  to  boot  your
       computer from the disk.

OPTIONS
       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
              printed.

       -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
              using 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
              safely.

              If used in association with  option  --expand,  ntfsresize  will
              determine 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 SIZE[k|M|G] bytes by shifting its  end  and
              keeping its beginning unchanged.  The optional modifiers k, M, G
              mean the SIZE parameter is given in kilo-,  mega-  or  gigabytes
              respectively.   Conforming  to  standards,  k=10^3,  M=10^6  and
              G=10^9. Use this option with --no-action first.
              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
              bootable.

       -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.

       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
       again.

       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.

AUTHORS
       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.

ACKNOWLEDGEMENT
       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.

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

       Ntfsresize related news, example of usage, troubleshooting,  statically
       linked binary and FAQ (frequently asked questions) are maintained at:
       http://mlf.linux.rulez.org/mlf/ezaz/ntfsresize.html

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