How can I copy my hard drive to an external drive?

Episode 1491 (1:34:09)

Mark from Vienna, VA

Mark would like to copy his macOS hard drive to a backup external drive. He did a drag and drop and it's taking forever. Is there a better way? Leo says that his favorite tool is SuperDuper. There's also Carbon Copy Cloner.

The one that Leo recommends most is ChronoSync. It'll sync both hard drives and he can make changes and sync them to his external so that it remains an exact duplicate.