other versions
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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. 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.