BLKCALC(1)						      General Commands Manual							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_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 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)