xenial (1) blkcalc.1.gz

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.  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 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)