The root of the problem is that there are actually two different
fill-modes: fill the input or output file of rescue operation.
# ddrescue -i ... -o ... bad_disk file.img file.log
- Input file fill mode, e.g. force reallocation of disk bad blocks:
# ddrescue -F - /dev/zero bad_disk file.log
This always works as expected. The logfile contains the correct
positions for the input file, regardless of -i/-o settings during rescue.
- Output file fill mode, e.g. mark bad block in image file:
# ddrescue -F - fill_file file.img file.log
This only works if -i/-o setting were identical during rescue. Otherwise
the logfile does not contain correct positions.
Regards,
Christian
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