Provided by: ntfsprogs_1.12.1-1_i386 bug


       ntfsresize - resize an NTFS filesystem without data loss


       ntfsresize [OPTIONS] --info 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
       Windows.  Defragmentation is NOT required prior to resizing because the
       program   can  relocate  any  data  if  needed,  without  risking  data

       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

       If both --info and --size are omitted then the NTFS filesystem 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

       IMPORTANT!   It’s  a  good  practice  making  REGULAR  BACKUPS  of your
       valuable 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
       notwithstanding  then  just  recreate  the  partition to be as large as


       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.  Then  you may use ntfsresize
       to enlarge 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
       existed  before.  Failing  to  do so you might not be able to boot your
       computer from the disk.


       Below is a summary of all the  options  that  ntfsresize  accepts.  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.  -fi is
       equivalent to -f -i.

       -i, --info
              By using this option 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 factors 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

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

       -s, --size SIZE[k|M|G]
              Resize filesystem to size[k|M|G] bytes.  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.

       -f, --force
              Forces  ntfsresize  to proceed with the resize operation even if
              the filesystem is marked for consistency check.

              Please  note,  ntfsresize  always  marks  the   filesystem   for
              consistency  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
              displays  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.

       -h, --help
              Display help and exit.


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


       No  reliability  problem  is  known.  If  you  need help please try the
       Ntfsresize FAQ first (see below) and if you don’t find your answer then
       send   your   question,   comment   or   bug   report  to  <linux-ntfs->.  No subscription is needed but the  mailing
       list is moderated and it can take a short time to approve your post.

       There  are  a  few very rarely met restrictions at present: filesystems
       having unknown bad sectors, relocation of  the  first  MFT  extent  and
       resizing  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
       multitudinous  partition  table  corruptions  resulting  in  unbootable
       Windows systems, 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 has been written by Szabolcs Szakacsits <>.


       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
       Granada  for  their continuous and highly valuable help, furthermore to
       Erik Meade, Martin Fick, Sandro Hawke, Dave Croal, Lorrin Nelson, Geert
       Hendrickx,  Robert  Bjorkman  and  Richard Burdick for beta testing the
       relocation support, to Florian Eyben, Fritz Oppliger,  Richard  Ebling,
       Sid-Ahmed  Touati,  Jan  Kiszka, Benjamin Redelings, Christopher Haney,
       Ryan Durk, Ralf Beyer for the valued contributions and to Theodore Ts’o
       whose resize2fs(8) man page originally formed the basis of this page.


       Ntfsresize  is  part  of the ntfsprogs(8) package and is available from as source  and  precompiled  binary.
       Ntfsresize  related news, example of usage, troubleshooting, statically
       linked binary and FAQ (frequently asked  questions)  is  maintained  at


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