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_sector_size] [-f fstype] image
       [images]

DESCRIPTION

       blkcalc creates a disk unit number mapping between two images, one normal 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, autodetection methods are used.

       -i imgtype
              Identify the type of image file, such as raw or split.  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.

       This is useful when keyword searching an image generated by blkls.   This  allows  one  to  identify  the
       original unit address and provides better 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)