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

NAME
       ntfsresize - resize an NTFS filesystem without data loss

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	integ-
       rity.

       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
       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 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.

   Partitioning
       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.

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  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
	      safely.

	      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-
	      data.

	      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
	      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.

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

KNOWN ISSUES
       No reliability problem is known.	If you need help please	try the	 Ntfs-
       resize  FAQ  first  (see	 below)	and if you don't find your answer then
       send your question, comment or bug report to the	development team:
       ntfs-3g-devel@lists.sf.net

       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
       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)

ntfs-3g	2017.3.23		   July	2013			 NTFSRESIZE(8)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT CODES | KNOWN ISSUES | AUTHORS | ACKNOWLEDGEMENT | AVAILABILITY | SEE ALSO

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