Hi Petr,

Petr Slansky wrote:
I miss a mode to update USB disk, it should work like this:

1) read block from destination disk
2) compare date from destination disk with source image
3) Are data the same? Then skip and continue go to step 1
4) otherwise do an update, write data from source disk to destination disk
and go to step 1

This "update mode" is already in my list of pending features. See https://lists.gnu.org/archive/html/bug-ddrescue/2022-01/msg00001.html

I'll start working on it soon. Stay tuned. :-)

Best regards,

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