David Deutsch wrote:
After about 18 hours of reading in -R mode:
[...]
So it currently runs an order of magnitude slower than before. Or was
that to be expected for the area that I'm reading?
One never knows what to expect from a failing drive. :-)
It seemed that the end of the disc had fewer errors, but they may be
harder to recover.
You may resume the rescue from where you were before with:
ddrescue your_options_and_files -i 791401MB
or you may leave it working and it will arrive there in 2.6 days or so.
Now imagine how difficult it is to develop an algorithm that works
reasonably well on all drives.
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