To backup your computer with a bootable recovery CD or bootable USB Flash Drive, insert the bootable Recovery CD or bootable USB Flash Drive, and then restart your computer, booting from CD drive or USB Flash Drive. This feature must be supported by system BIOS.

Upon reboot, in the Keriver Image Recovery main window, click 'Start->Backup Computer'

The following steps are almost the same as backing up in Windows, please refer to 'Backing up in Windows'.