Clonezilla is apartition and disk imaging/cloning program . It helps you to do systemdeployment, bare metal backup and recovery. Clonezilla saves and restores onlyused blocks in the hard disk. This increases the clone efficiency.

·Many File systems aresupported:
(1) ext2, ext3, ext4, reiserfs, reiser4, xfs, jfs, btrfs, f2fs and nilfs2 ofGNU/Linux,
(2) FAT12, FAT16, FAT32, exFAT and NTFS of MS Windows,
(3) HFS+ and APFS of Mac OS,
(4) UFS of FreeBSD, NetBSD, and OpenBSD,
(5) minix of Minix, and
(6) VMFS3 and VMFS5 of VMWare ESX.
Therefore you can clone GNU/Linux, MS windows, Intel-based Mac OS, FreeBSD,NetBSD, OpenBSD, Minix, VMWare ESX and Chrome OS/Chromium OS, no matter it's32-bit (x86) or 64-bit (x86-64) OS.
For these file systems, only used blocks in partition are saved and restored byPartclone. For unsupportedfile system, sector-to-sector copy is done by dd inClonezilla.

·Both MBRand GPTpartition formats of hard drive are supported. Clonezilla live also can bebooted on a BIOSor uEFI machine.

·Unattended mode issupported. Almost all steps can be done via commands and options. You can alsouse alot of boot parameters to customize your own imaging and cloning.

·One image restoring tomultiple local devices is supported.

·Image could be encrypted.This is done with ecryptfs,a POSIX-compliant enterprise cryptographic stacked filesystem.

·Based on Partclone (default), Partimage (optional), ntfsclone (optional), or dd to image or clone a partition.However, Clonezilla, containing some other programs, can save and restore notonly partitions, but also a whole disk.