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dcalc - Converts between unallocated disk unit numbers and regular disk
unit numbers.
dcalc [-dsu unit_addr] [-vV] [-i imgtype] [-o imgoffset]
[-f fstype] image [images]
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 ). 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).
- -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. Non-512 byte sectors can
be specified using ’@’ (32@2048)
- -v
- Verbose output to STDERR.
- -V
- Display version.
This is useful when keyword searching an image generated by dls. This
allows one to identify the original unit address and provides better documentation.
# dcalc -u 64 images/wd0e
dls(1)
,
Brian Carrier
<carrier at sleuthkit dot org>
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