Clone disk with progress dd

Block-clone whole disk; conv=noerror,sync keeps copying past bad sectors as zeros

dd if=/dev/sda of=/dev/sdb bs=64M conv=noerror,sync status=progress

#dd #disk #troubleshooting #performance

more dd all 2 commands →

Direct sync write benchmark dd if=/dev/zero of=/data/ddtest bs=1M count=1024 oflag=direct,dsync status=progress; rm /data/ddtest