EnglishFrenchSpanish

Ad


OnWorks favicon

ddrescue - Online in the Cloud

Run ddrescue in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command ddrescue that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


ddrescue - data recovery tool

SYNOPSIS


ddrescue [options] infile outfile [logfile]

DESCRIPTION


GNU ddrescue - Data recovery tool. Copies data from one file or block device to another,
trying to rescue the good parts first in case of read errors.

You should use a logfile unless you know what you are doing. If you reboot, check the
device names before restarting ddrescue. Do not use options '-F' or '-G' without reading
the manual first.

OPTIONS


-h, --help
display this help and exit

-V, --version
output version information and exit

-a, --min-read-rate=<bytes>
minimum read rate of good areas in bytes/s

-A, --try-again
mark non-trimmed, non-scraped as non-tried

-b, --sector-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 [new] error areas allowed

-E, --max-error-rate=<bytes>
maximum allowed rate of read errors per second

-f, --force
overwrite output device or partition

-F, --fill-mode=<types>
fill given type blocks with infile data (?*/-+)

-G, --generate-mode
generate approximate logfile from partial copy

-H, --test-mode=<file>
set map of good/bad blocks from given logile

-i, --input-position=<bytes>
starting position of domain in input file [0]

-I, --verify-input-size
verify input file size with size in logfile

-K, --skip-size=<min>[,<max>]
initial size to skip on read error [64 KiB]

-L, --loose-domain
accept an incomplete domain logfile

-m, --domain-logfile=<file>
restrict domain to finished blocks in file

-M, --retrim
mark all failed blocks as non-trimmed

-n, --no-scrape
skip the scraping phase

-N, --no-trim
skip the trimming phase

-o, --output-position=<bytes>
starting position in output file [ipos]

-O, --reopen-on-error
reopen input file after every read error

-p, --preallocate
preallocate space on disc for output file

-P, --data-preview[=<lines>]
show some lines of the latest data read [3]

-q, --quiet
suppress all messages

-r, --retry-passes=<n>
exit after <n> retry passes (-1=infinity) [0]

-R, --reverse
reverse the direction of all passes

-s, --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, --timeout=<interval>
maximum time since last successful read

-u, --unidirectional
run all passes in the same direction

-v, --verbose
be verbose (a 2nd -v gives more)

-w, --ignore-write-errors
make fill mode ignore write errors

-x, --extend-outfile=<bytes>
extend outfile size to be at least this long

-X, --exit-on-error
exit after the first read error

-1, --log-rates=<file>
log rates and error sizes in file

-2, --log-reads=<file>
log all read operations in file

--ask ask for confirmation before starting the copy

--cpass=<n>[,<n>]
select what copying pass(es) to run

--pause=<interval>
time to wait between passes [0]

Numbers may be in decimal, hexadecimal or octal, and may be followed by a multiplier: s =
sectors, k = 1000, Ki = 1024, M = 10^6, Mi = 2^20, etc... Time intervals have the format
1[.5][smhd] or 1/2[smhd].

Exit status: 0 for a normal exit, 1 for environmental problems (file not found, invalid
flags, I/O errors, etc), 2 to indicate a corrupt or invalid input file, 3 for an internal
consistency error (eg, bug) which caused ddrescue to panic.

REPORTING BUGS


Report bugs to [email protected]
Ddrescue home page: http://www.gnu.org/software/ddrescue/ddrescue.html
General help using GNU software: http://www.gnu.org/gethelp

COPYRIGHT


Copyright © 2014 Antonio Diaz Diaz. License GPLv2+: GNU GPL version 2 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.

Use ddrescue online using onworks.net services


Free Servers & Workstations

Download Windows & Linux apps

  • 1
    AstrOrzPlayer
    AstrOrzPlayer
    AstrOrz Player is a free media player
    software, part based on WMP and VLC. The
    player is in a minimalist style, with
    more than ten theme colors, and can also
    b...
    Download AstrOrzPlayer
  • 2
    movistartv
    movistartv
    Kodi Movistar+ TV es un ADDON para XBMC/
    Kodi que permite disponer de un
    decodificador de los servicios IPTV de
    Movistar integrado en uno de los
    mediacenters ma...
    Download movistartv
  • 3
    Code::Blocks
    Code::Blocks
    Code::Blocks is a free, open-source,
    cross-platform C, C++ and Fortran IDE
    built to meet the most demanding needs
    of its users. It is designed to be very
    extens...
    Download Code::Blocks
  • 4
    Amidst
    Amidst
    Amidst or Advanced Minecraft Interface
    and Data/Structure Tracking is a tool to
    display an overview of a Minecraft
    world, without actually creating it. It
    can ...
    Download Amidst
  • 5
    MSYS2
    MSYS2
    MSYS2 is a collection of tools and
    libraries providing you with an
    easy-to-use environment for building,
    installing and running native Windows
    software. It con...
    Download MSYS2
  • 6
    libjpeg-turbo
    libjpeg-turbo
    libjpeg-turbo is a JPEG image codec
    that uses SIMD instructions (MMX, SSE2,
    NEON, AltiVec) to accelerate baseline
    JPEG compression and decompression on
    x86, x8...
    Download libjpeg-turbo
  • More »

Linux commands

  • 1
    abi-tracker
    abi-tracker
    abi-tracker - visualize ABI changes
    timeline of a C/C++ software library.
    DESCRIPTION: NAME: ABI Tracker
    (abi-tracker) Visualize ABI changes
    timeline of a C/C+...
    Run abi-tracker
  • 2
    abicheck
    abicheck
    abicheck - check application binaries
    for calls to private or evolving symbols
    in libraries and for static linking of
    some system libraries. ...
    Run abicheck
  • 3
    couriermlm
    couriermlm
    couriermlm - The Courier mailing list
    manager ...
    Run couriermlm
  • 4
    couriertcpd
    couriertcpd
    couriertcpd - the Courier mail server
    TCP server daemon ...
    Run couriertcpd
  • 5
    gbklatex
    gbklatex
    bg5latex - Use LaTeX directly on a Big5
    encodedtex file bg5pdflatex - Use
    pdfLaTeX directly on a Big5 encodedtex
    file bg5+latex - Use LaTeX directly on a
    Big5+...
    Run gbklatex
  • 6
    gbkpdflatex
    gbkpdflatex
    bg5latex - Use LaTeX directly on a Big5
    encodedtex file bg5pdflatex - Use
    pdfLaTeX directly on a Big5 encodedtex
    file bg5+latex - Use LaTeX directly on a
    Big5+...
    Run gbkpdflatex
  • More »

Ad