Blkcalc

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Version 2.09 Man Page

NAME

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

SYNOPSIS

      dcalc [-dsu unit_addr] [-vV] [-i imgtype] [-o  imgoffset]  [-f  fstype]
      image [images]

DESCRIPTION

      dcalc 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  dls(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(1) ).
      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 dls(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 dls -s).  The image is the full, original
      image (i.e. from dd(1)).
      -f fstype
             Identify the File System type of the image.  Use the -? argument
             for  a  list  of supported file system types.  If not given, the
             default type for the platform is used.
      -i imgtype
             Identify the type of image file, such as raw or split.   Raw  is
             the default.
      -o imgoffset
             The  sector  offset  where  the file system starts in the image.
             Non-512 byte sectors can be specified using ’@’ (32@2048)
      -v     Verbose output to STDERR.
      -V     Display version.
      This is useful when using lazarus or keyword searching an image  gener-
      ated by dls.  This allows one to identify the original unit address and
      provides better documentation.

EXAMPLE

      # dcalc -u 64 images/wd0e

SEE ALSO

      dd(1), dls(1), lazarus(1)

HISTORY

      dcalc first appeared in TCTUTILs v1.01. as blockcalc.

AUTHOR

      Brian Carrier <carrier@sleuthkit.org>