GNU ddrescue Publisher's description
from Antonio Diaz Diaz
GNU ddrescue is a data recovery tool....
GNU ddrescue is a data recovery tool. It copies data from one file or block device (hard disc, cdrom, etc) to another, trying hard to rescue data in case of read errors.
The basic operation of ddrescue is fully automatic. That is, you don't have to wait for an error, stop the program, read the log, run it in reverse mode, etc.
If you use the logfile feature of ddrescue, the data is rescued very efficiently (only the needed blocks are read). Also you can interrupt the rescue at any time and resume it later at the same point.
Ddrescue does not write zeros to the output when it finds bad sectors in the input, and 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 without wiping out the data already rescued.
What's New in This Release:В· The syntax of the "--max-errors" option has been extended to specify new errors (--max-errors=+N).
В· The short name of the "--retrim" option has been changed to "-M".
В· A spurious warning about "preallocation not available" has been fixed.
В· The code implementing logfile generation has been moved to the new class "Genbook" in preparation for the addition of the reverse mode.
System Requirements:No special requirements.
Program Release Status: Minor Update
Program Install Support: Install and Uninstall