ddrescue
ddrescue (in Ubuntu it is named gddrescue) is a data recovery
tool that copies data from a file or hardware device that contains data
to another place, making every effort to rescue data in the event of
read errors.
The basic operation of ddrescue is fully automatic.
By this
we mean that the user does not have to wait for an error, terminate the
software, read the log file, and run the program in reverse. The log
file enables data to be rescued very efficiently.
Having the option not to truncate the output file allows
ddrescue to be run multiple times on the same output file, each time
attempting to fill in the gaps.
With two or more damaged copies of a file (or CD, DVD, etc)
ddrescue should be able to reconstruct a complete and error-free file.
The logfile is periodically saved to disk. In the event of a
crash you can resume the rescue with little recopying. Also, the same
logfile can be used for multiple commands that copy different areas of
the
file, and for multiple recovery attempts over different subsets.
ddrescue aligns its I/O buffer to the sector size so that it
can be used to read from raw devices. For efficiency reasons, the
buffer is aligned to the memory page size if page size is a multiple of
sector size.
ddrescue 1.15
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Price
Free to download
Size
56KB
License
GNU GPL v3
Developer
Antonio Diaz Diaz
Website
www.gnu.org
System Requirements
Support
Sites:
Manual
Selected
Reviews:
Mac
OS X Hints
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Features include:
- Copies data from one file or block device (hard disk,
DVD-ROM, etc) to another
- Does not truncate the output file if not asked to, so every
time you run it on the same output file, it tries to fill in the gaps
- Designed to be fully automatic
- Data is rescued very efficiently (only the needed blocks
are read)
- Log file is periodically saved to disc
- Automatic merging of backups
- Log file can be used for multiple commands that copy
different areas of the file, and for multiple recovery attempts over
different
subsets
- Automatic merging
- Highlights bad sectors on the disk
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Last Updated Saturday, May 12 2012 @ 10:43 AM EDT
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