I'm using ddrescue to try to rescue data. It is insane slow (like a couble kb/s when I'm lucky) but after a few days it got some data. Here is the command I used:
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ddrescue -d -n /dev/sdd imagefile logfile
Those are PDFs with form fields that had been filled up with text. The PDFs have all the pages, but all fields are empty! I tried opening them on a text editor to see if could spot data in there somewhere but I think the data is gone. All PDFs are the same size, that also is an evidence that the form data is gone.
So now I wonder, why is that? Where would that information be? Would that be because the recovery wasn't complete? Maybe photorec doesn't work well with forms?
Anyway, I'm running ddrescue again, but not sure what parameters to use to make it try to squeeze more data out.
Do you guys have any suggestion or idea that could help me? Thanks!