I'm trying to create a full disk ISO image of a 250GB HDD but I had to cancel the operation about 80% of the way through, it'd taken nearly 16 hours to get to this point and I'd rather not have to wait through that all again. I used the command:
dd if=/dev/sdc of=ssd.iso
When I had to cancel it with Ctrl+C it showed
445056121+0 records in
445056121+0 records out
227868733952 bytes (228 GB, 212 GiB copied, 62735.8 s, 3.6 MB/s
Is there a way to resume creating the ISO image? I'd rather not have to wait for it to do the whole thing again which would take almost 24 hours. I saw some people use the seek=
command to resume but I don't know how to use it.
ddrescue
which skips unused blocks so it's much faster. See Is "dd" a reliable tool to make an SSD image? – phuclv Sep 23 '21 at 04:02