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dd if=/dev/sda0 conv=sync,noerror bs=128K status=progress | gzip -c file.gzYou can add an additional pipe in there if you need to ssh it to another machine if you don't have room on the original.
If zstd is available, it is a lot more efficient and performant over gzip.
True. I've done that command for so long that I've kinda gotten gzip hardwired into my fingers.
The added info from
pvis also nice ^^I did a thing like this but with a ios command that wrote the disk to image and piped it to ssh but then piped it back to a waiting drive. It was great as you could pull the disk and boot right off it. Do you know if that can be done with dd?
I'd probably dd it straight on to the drive, but I'm sure you could get it to go to New Orleans and play the Macarana before it came back if you used enough pipes.