👤
Home Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:
Select Section of Man Page:
Select Man Page Repository:

Linux 2.6 - man page for ntfsundelete (linux section 8)

NTFSUNDELETE(8) 								  NTFSUNDELETE(8)

NAME
       ntfsundelete - recover a deleted file from an NTFS volume.

SYNOPSIS
       ntfsundelete [options] device

DESCRIPTION
       ntfsundelete has three modes of operation: scan, undelete and copy.

   Scan
       The  default  mode,  scan  simply  reads an NTFS Volume and looks for files that have been
       deleted.  Then it will print a list giving the inode number, name and size.

   Undelete
       The undelete mode takes the files either matching the regular expression  (option  -m)  or
       specified  by  the  inode-expressions  and  recovers as much of the data as possible.   It
       saves the result to another location.  Partly for safety, but mostly  because  NTFS  write
       support isn't finished.

   Copy
       This  is  a  wizard's option.  It will save a portion of the MFT to a file.  This probably
       only be useful when debugging ntfsundelete

   Notes
       ntfsundelete only ever reads from the NTFS Volume.  ntfsundelete  will  never  change  the
       volume.

CAVEATS
   Miracles
       ntfsundelete cannot perform the impossible.

       When  a file is deleted the MFT Record is marked as not in use and the bitmap representing
       the disk usage is updated.  If the power isn't turned off  immediately,	the  free  space,
       where  the file used to live, may become overwritten.  Worse, the MFT Record may be reused
       for another file.  If this happens it is impossible to tell where the file was on disk.

       Even if all the clusters of a file are not in use, there is no guarantee that they haven't
       been overwritten by some short-lived file.

   Locale
       In  NTFS all the filenames are stored as Unicode.  They will be converted into the current
       locale for display by ntfsundelete.  The utility has successfully displayed  some  Chinese
       pictogram filenames and then correctly recovered them.

   Extended MFT Records
       In  rare  circumstances, a single MFT Record will not be large enough to hold the metadata
       describing a file (a file would have to be in hundreds of fragments for this  to  happen).
       In these cases one MFT record may hold the filename, but another will hold the information
       about the data.	ntfsundelete will not try and piece together such records.  It will  sim-
       ply show unnamed files with data.

   Compressed and Encrypted Files
       ntfsundelete  cannot  recover  compressed  or encrypted files.  When scanning for them, it
       will display as being 0% recoverable.

   The Recovered File's Size and Date
       To recover a file ntfsundelete has to read the file's metadata.	Unfortunately, this isn't
       always intact.  When a file is deleted, the metadata can be left in an inconsistent state.
       e.g.  the file size may be zero; the dates of the file may be  set  to  the  time  it  was
       deleted, or random.
       To  be  safe ntfsundelete will pick the largest file size it finds and write that to disk.
       It will also try and set the file's date to the last modified date.  This date may be  the
       correct last modified date, or something unexpected.

OPTIONS
       Below  is a summary of all the options that ntfsundelete 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.

       -b, --byte NUM
	      If  any  clusters of the file cannot be recovered, the missing parts will be filled
	      with this byte.  The default is zeros.

       -C, --case
	      When scanning an NTFS volume, any filename matching (using the --match  option)  is
	      case-insensitive.  This option makes the matching case-sensitive.

       -c, --copy RANGE
	      This wizard's option will write a block of MFT FILE records to a file.  The default
	      file is mft which will be created in the current directory.   This  option  can  be
	      combined with the --output and --destination options.

       -d, --destination DIR
	      This  option  controls  where  to  put the output file of the --undelete and --copy
	      options.

       -f, --force
	      This will override some sensible defaults, such  as  not	overwriting  an  existing
	      file.  Use this option with caution.

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

       -i, --inodes RANGE
	      Recover  the  files  with these inode numbers.  RANGE can be a single inode number,
	      several numbers separated by commas "," or a range separated by a dash "-".

       -m, --match PATTERN
	      Filter the output by only looking for matching filenames.  The pattern can  include
	      the  wildcards  '?', match exactly one character or '*', match zero or more charac-
	      ters.  By default the matching is case-insensitive.  To make the search case sensi-
	      tive, use the --case option.

       -O, --optimistic
	      Recover parts of the file even if they are currently marked as in use.

       -o, --output FILE
	      Use this option to set name of output file that --undelete or --copy will create.

       -P, --parent
	      Display the parent directory of a deleted file.

       -p, --percentage NUM
	      Filter  the  output  of  the  --scan  option, by only matching files with a certain
	      amount of recoverable content.  Please read the caveats section for more details.

       -q, --quiet
	      Reduce the amount of output to a minimum.  Naturally, it doesn't make sense to com-
	      bine this option with --scan.

       -s, --scan
	      Search  through  an  NTFS volume and print a list of files that could be recovered.
	      This is the default action of ntfsundelete.  This list can be filtered by filename,
	      size,  percentage recoverable or last modification time, using the --match, --size,
	      --percent and --time options, respectively.

	      The output of scan will be:

	      Inode  Flags  %age     Date      Size  Filename
	       6038  FN..    93%  2002-07-17  26629  thesis.doc

	      +----------------------------------------+
	      |Flag   Description		       |
	      |F/D    File/Directory		       |
	      |N/R    (Non-)Resident data stream       |
	      |C/E    Compressed/Encrypted data stream |
	      |!      Missing attributes	       |
	      +----------------------------------------+

	      The percentage field shows how much of the file can potentially be recovered.

       -S, --size RANGE
	      Filter the output of the --scan option, by looking for a particular range  of  file
	      sizes.   The  range  may be specified as two numbers separated by a '-'.	The sizes
	      may be abbreviated using the suffixes k, m, g, t, for kilobytes,	megabytes,  giga-
	      bytes and terabytes respectively.

       -t, --time SINCE
	      Filter  the  output  of the --scan option.  Only match files that have been altered
	      since this time.	The time must be given as number using a suffix of d, w, m, y for
	      days, weeks, months or years ago.

       -T, --truncate
	      If ntfsundelete is confident about the size of a deleted file, then it will restore
	      the file to exactly that size.  The default behaviour is to round up  the  size  to
	      the nearest cluster (which will be a multiple of 512 bytes).

       -u, --undelete
	      Select  undelete	mode.	You  can specify the files to be recovered using by using
	      --match or --inodes options.  This option can be combined with --output, --destina-
	      tion, and --byte.

	      When  the file is recovered it will be given its original name, unless the --output
	      option is used.

       -v, --verbose
	      Increase the amount of output that ntfsundelete prints.

       -V, --version
	      Show the version number, copyright and license for ntfsundelete.

EXAMPLES
       Look for deleted files on /dev/hda1.

	      ntfsundelete /dev/hda1

       Look for deleted documents on /dev/hda1.

	      ntfsundelete /dev/hda1 -s -m '*.doc'

       Look for deleted files between 5000 and 6000000 bytes, with  at	least  90%  of	the  data
       recoverable, on /dev/hda1.

	      ntfsundelete /dev/hda1 -S 5k-6m -p 90

       Look for deleted files altered in the last two days

	      ntfsundelete /dev/hda1 -t 2d

       Undelete inodes 2, 5 and 100 to 131 of device /dev/sda1

	      ntfsundelete /dev/sda1 -u -i 2,5,100-131

       Undelete  inode number 3689, call the file 'work.doc' and put it in the user's home direc-
       tory.

	      ntfsundelete /dev/hda1 -u -i 3689 -o work.doc -d ~

       Save MFT Records 3689 to 3690 to a file 'debug'

	      ntfsundelete /dev/hda1 -c 3689-3690 -o debug

BUGS
       There are some small limitations to ntfsundelete, but currently no  known  bugs.   If  you
       find a bug please send an email describing the problem to the development team:
       ntfs-3g-devel@lists.sf.net

AUTHORS
       ntfsundelete was written by Richard Russon and Holger Ohmacht, with contributions from An-
       ton Altaparmakov.  It was ported to ntfs-3g by Erik Larsson and Jean-Pierre Andre.

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

SEE ALSO
       ntfsinfo(8), ntfsprogs(8)

ntfs-3g 2011.4.12AR.4			  November 2005 			  NTFSUNDELETE(8)


All times are GMT -4. The time now is 10:29 AM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
×
UNIX.COM Login
Username:
Password:  
Show Password





Not a Forum Member?
Forgot Password?