Bare metal recovery tool, for Linux, Mac OSX, and Windows.

All major file systems supported, LVM2 supported.

Saves MBR, partition table, partitions, or entire disks.

https://partclone.org alterative software. Supports more file systems.

Clonezilla

• Live edition: CD, USB, Hard disk, PXE.
• Server edition.

Clonezilla is fast.

Clonezilla is Sourceforge’s project of the month.