NAME
ddrescue - manual page for ddrescue 1.11
SYNOPSIS
ddrescue [options] infile outfile [logfile]
DESCRIPTION
GNU ddrescue - Data recovery tool. Copies data from one file or block
device to another, trying hard to rescue data in case of read errors.
You should use a logfile unless you know what you are doing.
OPTIONS
-h, --help
display this help and exit
-V, --version
output version information and exit
-b, --block-size=<bytes>
sector size of input device [default 512]
-B, --binary-prefixes
show binary multipliers in numbers [SI]
-c, --cluster-size=<sectors>
sectors to copy at a time [128]
-C, --complete-only
do not read new data beyond logfile limits
-d, --direct
use direct disc access for input file
-D, --synchronous
use synchronous writes for output file
-e, --max-errors=<n>
maximum number of error areas allowed
-F, --fill=<types>
fill given type blocks with infile data (?*/-+)
-g, --generate-logfile
generate approximate logfile from partial copy
-i, --input-position=<pos>
starting position in input file [0]
-m, --domain-logfile=<file>
restrict domain to finished blocks in file
-n, --no-split
do not try to split or retry failed blocks
-o, --output-position=<pos>
starting position in output file [ipos]
-q, --quiet
suppress all messages
-r, --max-retries=<n>
exit after given retries (-1=infinity) [0]
-R, --retrim
mark all failed blocks as non-trimmed
-s, --max-size=<bytes>
maximum size of input data to be copied
-S, --sparse
use sparse writes for output file
-t, --truncate
truncate output file to zero size
-T, --try-again
mark non-split, non-trimmed blocks as non-tried
-v, --verbose
verbose operation
Numbers may be followed by a multiplier: b = blocks, k = kB = 10^3 =
1000, Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30,
etc...
REPORTING BUGS
Report bugs to bug-ddrescue@gnu.org Ddrescue home page:
http://www.gnu.org/software/ddrescue/ddrescue.html General help using
GNU software: http://www.gnu.org/gethelp
COPYRIGHT
Copyright © 2009 Antonio Diaz Diaz. License GPLv3+: GNU GPL version 3
or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for ddrescue is maintained as a Texinfo manual.
If the info and ddrescue programs are properly installed at your site,
the command
info ddrescue
should give you access to the complete manual.