When the system crashes and the computer doesn't boot, we can also use an external hard drive to boot the computer. On the other hand, it can also help you with data migration.įor example, when you upgrade or replace a hard drive, clone the bootable hard drive externally. On the one hand, cloning the hard drive prevents the loss of important stored data (such as installed programs and personal files), which has the same effect as backup and saves the restoration step. Cloning hard drives is of great help to people's lives.