On 03/12/2014 10:52, Chris Ahlstrom wrote:
...
http://www.gnu.org/software/ddrescue/

GNU ddrescue is a data recovery tool. It copies data from one file or
block device (hard disc, cdrom, etc) to another, trying to rescue the
good parts first in case of read errors.

Ddrescuelog is a tool that manipulates ddrescue logfiles, shows logfile
contents, converts logfiles to/from other formats, compares logfiles,
tests rescue status, and can delete a logfile if the rescue is done.
Ddrescuelog operations can be restricted to one or several parts of the
logfile if the domain setting options are used.

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, restart it
from a new position, etc.

No guarantees, of course.


Won't help you recover from an optical disc if the drive says "No Disc
present" will it, which in my experience can even be the first sign of
trouble.

--

Brian Gregory (in the UK).
To email me please remove all the letter vee from my email address.