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Langue: en

Version: July 2009 (ubuntu - 24/10/10)

Section: 1 (Commandes utilisateur)


ddrescue - manual page for ddrescue 1.11


ddrescue [options] infile outfile [logfile]


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.


-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...


Report bugs to Ddrescue home page: General help using GNU software: Copyright © 2009 Antonio Diaz Diaz. License GPLv3+: GNU GPL version 3 or later <>
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


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.

Dans le but d'éviter de polluer le groupe de
méta-discussions sur le création de ce groupe, sa vie, son oeuvre,
je propose la création d'un groupe
-+- MB in: Guide du Cabaliste Usenet - Charte de fr.cabaleionique.d -+-