clonezilla

Not as an operating system, but rather a small bootable Linux distribution for the x86 platform that can be used to clone partitions and entire hard drives. Clonezilla Live makes it possible to create 1: 1 backup copies of an entire system - at almost incredible speed. The distribution is based on a minimized live image of Debian equipped with Clonezilla tools. A CD, DVD, or USB device can be used as a medium, which also serves as a storage device for the copied data. Alternatively, a network resource, such as an SSHFS.

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