I've always used pv to get progress from dd, or other pipes: pv image.img | dd of=/dev/rdisk2 bs=1M This adds another pipe though. I don't know the effect t

I've always used pv to get progress from dd, or other pipes: pv image.img | dd of=/dev/rdisk2 bs=1M This adds another pipe though. I don't know the effect this has on performance.