A way to monitor dd progress under macOS
As usual, when doing a dd under macOS (even on *nix system), we do not have any progress info… The normal way is to send INFO signal to the process.
killall -INFO dd
An alternative is to use pv, but that is not provided on macOS.
No problem, install it with brew
brew install pv
And when calling dd to restore an image :
sudo pv -perb /dev/disk3 | sudo dd of=./my_image.iso bs=1m
Of couse, you will not have the ETA, but you can see the progress rate, and estimate how long time it takes.
Hope that help 🙂