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blkcalc(1)                                                          blkcalc(1)




NAME

       blkcalc  -  Converts  between unallocated disk unit numbers and regular
       disk unit numbers.


SYNOPSIS

       blkcalc [-dsu unit_addr] [-vV] [-i imgtype] [-o imgoffset] [-b dev_sec-
       tor_size] [-f fstype] image [images]


DESCRIPTION

       blkcalc creates a disk unit number mapping between two images, one nor-
       mal and another that only contains the unallocated units of  the  first
       (the  default behavior of the blkls(1) program).  One of the -d, -s, or
       -u options must be  given.   If  the  -d  option  is  given,  then  the
       unit_addr  value  is  the  disk unit address in the regular image (i.e.
       from dd ).  If the unit is unallocated, its address in  an  unallocated
       image is given.  If the -u option is given, then the unit_addr value is
       the disk unit  address  in  the  unallocated  unit  image  (i.e.   from
       blkls(1) ).  Its disk unit address in the original image is determined.
       If the -s option is given, then the unit_addr value is  the  disk  unit
       address  in  the  slack  image  (i.e. from blkls -s).  The image is the
       full, original image (i.e. from dd).  blkcalc was called dcalc  in  TSK
       versions prior to 3.0.0.


       -f fstype
              Identify  the  File  System type of the image.  Use '-f list' to
              list the supported file system types.  If not given,  autodetec-
              tion methods are used.

       -i imgtype
              Identify  the type of image file, such as raw.  Use '-i list' to
              list the supported types.  If not given,  autodetection  methods
              are used.

       -o imgoffset
              The sector offset where the file system starts in the image.

       -b dev_sector_size
              The  size,  in  bytes, of the underlying device sectors.  If not
              given, the value in the image format is used (if it  exists)  or
              512-bytes is assumed.

       -v     Verbose output to STDERR.

       -V     Display version.

       image [images]
              The  disk or partition image to read, whose format is given with
              '-i'.  Multiple image file names can be given if  the  image  is
              split  into multiple segments.  If only one image file is given,
              and its name is the first in a sequence (e.g., as  indicated  by
              ending  in  '.001'),  subsequent image segments will be included
              automatically.


       This is useful when keyword searching  an  image  generated  by  blkls.
       This allows one to identify the original unit address and provides bet-
       ter documentation.



EXAMPLE

       # blkcalc -u 64 images/wd0e



SEE ALSO

       blkls(1),



AUTHOR

       Brian Carrier <carrier at sleuthkit dot org>

       Send documentation updates to <doc-updates at sleuthkit dot org>



                                                                    blkcalc(1)

sleuthkit 4.6.5 - Generated Sun Feb 17 10:19:44 CST 2019
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