hi all . i do backup hard disk by booting archlinux's install USB memory and dd .
because one liner ' while true ; do ; sleep 10 ; killall -USR1 dd ; done ' is effective on another screen ( alt + F2 ) . so i know the progressive state of dd on original screen ( alt + F1) . reversely i do archlinux's hard disk by booting openbsd's install USB memory and dd ( espetially it is made by btrfs ) . --- regards
