Clonezilla

Overview

Clonezilla is a free disk and partition imaging tool for cloning systems, deploying them, and recovering from bare-metal failures. It suits administrators and technically comfortable users who can work from a bootable environment; it is a poor fit for routine online or file-by-file backups.

Its three editions cover one-machine work and simultaneous multi-computer deployments, but the trade-offs matter: there are no incremental backups, and image contents cannot be browsed for individual files.

Key features

Imaging and file systems

On supported file systems, Clonezilla copies used blocks, which avoids copying empty space. Unsupported file systems instead require sector-to-sector copying. The supported range includes Linux, Windows, Mac, BSD, Minix, and VMware file systems, including ext4, NTFS, APFS, and VMFS3/5.

Images can be saved to local disks or SSH, Samba, NFS, and WebDAV servers. MBR and GPT are supported, and Clonezilla live can boot on BIOS and UEFI systems. The project also says images can be encrypted, with AES-256 available to secure access, storage, and transfer.

Deployment editions

Clonezilla live is aimed at a single machine. Clonezilla lite server and Clonezilla SE can clone many computers simultaneously; the project describes use with more than 40 computers. SE supports multicast, while lite server supports BitTorrent for large deployments. These options make Clonezilla more compelling for system rollout than for users seeking a polished everyday backup workflow.

Boot requirements and limits

Clonezilla live requires an x86 or x86-64 processor, at least 196 MB of RAM, and a boot device such as CD/DVD, USB, PXE, or a hard drive. The destination partition must be at least as large as the source. Online imaging and differential or incremental backups are not implemented, so backups require a boot workflow and repeated full imaging rather than ongoing change capture.

Images cannot be explored or mounted, which rules out direct recovery of a single file from an image. That is a significant drawback when the goal is retrieving one document rather than restoring or duplicating a disk.

Pricing

Clonezilla is free and open-source software under GPL version 2. Its Clonezilla plan costs 0.00 USD per free. The free plan includes the imaging and cloning program rather than a time-limited trial or paid tier; no paid plan is presented. The practical cost is the boot-based workflow and the limits on incremental, online, and individual-file recovery.

Platforms

Clonezilla runs from a Linux-based bootable environment, with Clonezilla live supporting x86 and x86-64 BIOS or UEFI machines. It can image supported file systems used by Linux, Windows, Mac, BSD, Minix, VMware ESX, and Chrome OS/Chromium OS. It supports computer and server backup, but not mobile backup. The downloads page lists stable Clonezilla live 3.3.3-37, based on Debian, and alternative stable 20260913-resolute, based on Ubuntu; download checksum files are GPG-signed by the DRBL project.

Who it's for

Choose Clonezilla when you need free disk-level recovery or repeatable deployment across machines and can boot systems into a dedicated environment. Its server editions make it especially relevant to administrators cloning fleets. Look elsewhere for continuous backups, imaging while a system is online, smaller destination partitions, or direct access to individual files inside an image.

Pros and cons

Pros

• Free and open source: the software costs nothing and is distributed under GPL version 2.
• Scales beyond one machine: lite server and SE can clone many computers at once, with multicast or BitTorrent options for mass deployment.
• Broad system coverage: supported file systems span several operating-system families, and live supports both BIOS and UEFI booting.
• Remote image storage and encryption: images can go to common network servers, with AES-256 encryption available.

Cons

• Boot-based operation: online imaging is not implemented, so it does not serve as a live, continuous backup tool.
• No incremental or differential backups: it cannot limit subsequent backups to changed data.
• No direct file recovery: images cannot be mounted or browsed to retrieve a single file.
• Destination size constraint: the destination partition must be at least as large as the source.

Alternatives

For a different free disk-cloning option, compare Redo Rescue, whose code can be audited, modified, and copied at no cost under GNU GPLv3. Rescuezilla is another free option that runs from a bootable USB or CD-ROM.

Pick HDClone if its free edition's private-use limit of up to 4 TB and 70 MB/s fits your needs, or if you need its paid Basic Edition for up to two PCs. Lazesoft Recovery Suite combines data recovery, Windows recovery, password recovery, disk imaging, and cloning for non-commercial home use.

AOMEI Backupper is a Windows-only alternative with a perpetually free Standard plan for PC backup. Casper is a Windows alternative with free and trial options. For personal, non-commercial Windows use on up to three PCs in one household, Lazesoft Disk Image & Clone has a free Home Edition. Mac users can consider SuperDuper!, which offers an unregistered erase-then-copy mode.

Browse Disk Cloning Software, OS Deployment Software, Bare Metal Provisioning Software, Disk Imaging Software, and Backup software for more options.

Verdict

Clonezilla is the right choice for cost-conscious users and administrators who need bootable disk imaging, bare-metal recovery, or large-scale cloning. Its free licensing, file-system coverage, and server deployment options are strong reasons to choose it. Look elsewhere if you need online or incremental backups, smaller-target restores, or convenient single-file recovery.