While I discovered ddrescue when I really needed to rescue a disk (for
which mapfile is of course critical), I now routinely use it to create
periodic full backups of my hard drive as (mountable) image files, as I
find it superior for that purpose than the various other disk cloning
software around. For that use, one really doesn't need a mapfile (I
create it anyway and check it at the end, to have the nice satisfaction
of seeing a single line entry covering the entire range of sectors with
no errors!).
But I guess you could make an argument for creating a
defaultNNNN.mapfile in the home directory (of the ddrescue execution
environment, which may well be a non-persistent RAM disk) if no mapfile
was specified.
Shahrukh
On 2019-02-14 9:06 PM, David Morrison wrote:
Are there any circumstances when you would not want a mapfile created?
It just seems that if it is an essential argument according to the
documentation, then if none is provided there should be an error.
David
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