EaseUs Disk Copy gives the option of creating an exact copy/clone of an internal hard disk of up to 1 terabyte in size for the free version. In this process data is copied from one hard disk to another which includes the operating system, all its settings, program files and data be it documents or otherwise. This comes in handy when upgrading a hard disk or replacing one a without the need to re-install Windows, programs nor backing up documents. Because external hard disks connected through USB or Firewire are not supported a new hard disk must be installed internally for EaseUs Disk Copy to perform a copy. A bootable disk can be created using the setup wizard which will prompt for a USB drive or a CD or DVD. Unfortunately the website does not include any documentation for users will have to tinker with it to learn its features.