Blkcalc

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dcalc

Version 2.09

Purpose

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 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)).

Usage

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

Options

Switch	Purpose
-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.

Example

# dcalc -u 64 images/wd0e

History

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

Author

Brian Carrier <carrier@sleuthkit.org>