Allows to copy data from one file or block device to another
It is intended for error recovery. It doesn't abort on errors and doesn't truncate the output file.
dd_rescue uses large block sizes to quicken the copying, but falls back to small blocks upon encountering errors.
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What's New in This Release:
- The -p/--preserve option now also copies extended attributes (including ACLs) if there are any.
- Many checks and test cases have been added to make check.
- Half-empty blocks are now detected now in sparse detection.
- If copying with an odd file offset, the odd-sized write will be done first so that further accesses should be better aligned, which should help with performance (and optionally sparse detection).