[Bug-ddrescue] How to revisit and copy previously skipped areas?

[3ddi3]

Good day,

I was wondering how I can get ddrescue to revisit previously skipped areas?
I was using the following commands to copy as much data from
undamaged/minimally damaged areas while getting it to skip ahead when
encountering slow reading areas (I assume these are the damages areas).

sudo ddrescue --direct --sparse -a 20000 -K 100000 -i 0 -T 1 /dev/sdc
/mnt/wd/image /mnt/wd/log


I've tried using the following command, and I understand it will revisit all
areas starting from 0 bytes.

sudo ddrescue --direct --sparse -A --retrim -a 20000 -K 100000 -i 0 -T 1
/dev/sdc /mnt/wd/image /mnt/wd/log


Previously when I tried using both the -i (`--input-position=bytes') and -s
(`--max-size=bytes'), I seem to be encoutering some errors as my 500 GB
faulty hard disk produced a partially copied image of 544 GB (I stopped the
process when I saw the image size).


Can you guys kindly enlighten me on how I can use the -i and -s command
properly?



Many thanks!

Ed
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