Clonezilla

Clonezilla is a free partition and disk imaging program for system deployment, bare-metal backup, and recovery. Clonezilla live is intended for one machine; Clonezilla lite server and Clonezilla SE can clone many computers at once, with the site describing deployments of 40-plus computers. It saves and restores used blocks on supported file systems and uses sector-to-sector copying for unsupported ones. Listed file systems include Linux, Windows, Mac, BSD, Minix, and VMware formats such as ext4, NTFS, APFS, and VMFS3/5. Images can be stored on local disks or SSH, Samba, NFS, and WebDAV servers, and can be encrypted with AES-256. Clonezilla SE supports multicast, while lite server supports BitTorrent deployment. Clonezilla live supports MBR and GPT and can boot on BIOS or UEFI machines. It requires an x86 or x86-64 processor, 196 MB RAM, and a boot device such as CD/DVD, USB, PXE, or hard drive. Destination partitions must be at least as large as the source. Differential and incremental backups and online imaging are not implemented; images cannot be mounted or explored for direct individual-file recovery.

Clonezilla offers imaging and cloning options ranging from a single machine to large deployments, with multiple storage and transfer methods. Its stated limits include no online or differential backups and no direct individual-file recovery from images.

Clonezilla suits users who need disk imaging for recovery or deployment, from single-machine use to multi-computer cloning. It may also suit administrators who can work with bootable environments and supported storage protocols.

Overview

Clonezilla is a free disk and partition imaging utility for system deployment, bare-metal backup, and recovery. It suits technically confident users and administrators who can work from a bootable Linux environment. Its appeal is broad file-system and deployment support; its main compromise is that it is built around whole-image work, not ongoing, file-level backup.

The live edition targets one machine, while Clonezilla lite server and Clonezilla SE can clone multiple computers simultaneously, including deployments the project describes as 40-plus computers. That range makes it useful from individual recovery to fleet rollout, but the server editions are the relevant choice for mass deployment.

Clonezilla belongs among Disk Cloning Software, Disk Imaging Software, OS Deployment Software, Bare Metal Provisioning Software, and Backup software.

Key features

Images across file systems

On supported file systems, Clonezilla saves and restores used blocks, avoiding a full sector copy. For unsupported file systems, it switches to sector-to-sector copying, which can mean more data to handle. Its supported range includes Linux, Windows, Mac, BSD, Minix, and VMware file systems, with examples including ext4, NTFS, APFS, and VMFS3/5.

Images can be kept on a local disk or transferred to SSH, Samba, NFS, or WebDAV servers. MBR and GPT are supported, and Clonezilla live boots on BIOS or UEFI machines. The project says images can be encrypted, with AES-256 securing access, storage, and transfer.

Single-machine and mass deployment

Clonezilla live is designed for one machine. Lite server and SE can clone many computers at once, with the project describing use across 40-plus computers. SE provides multicast, while lite server offers BitTorrent for massive deployment; both are practical choices when repeating the same cloning operation across a group of systems.

Boot and recovery constraints

Clonezilla live needs an x86 or x86-64 processor, 196 MB of RAM, and a boot device such as CD/DVD, USB, PXE, or a hard drive. Because it runs in a bootable environment, it is not suited to online imaging. The destination partition must be at least as large as the source, and the lack of differential or incremental backups makes it less suitable for frequent, space-conscious backup cycles. Images cannot be browsed or mounted, so restoring a single file directly from an image is not supported.

Pricing

Clonezilla costs nothing. The free and open-source software is distributed under GPL version 2, and the same free offering covers its live and server editions. That makes it a compelling option for users willing to manage boot media and imaging workflows themselves, rather than pay for a more guided backup experience.

Platforms

Clonezilla runs from a Linux-based bootable environment. Clonezilla live supports x86 and x86-64 systems and can boot through BIOS or UEFI; its image support spans file systems used by Linux, Windows, Mac, BSD, Minix, VMware ESX, and Chrome OS/Chromium OS. The stated computer backup and server backup support make it relevant to workstations and server environments, but it does not support mobile backup. The downloads page offers stable Clonezilla live 3.3.3-37 based on Debian and alternative stable 20260913-resolute based on Ubuntu. Checksum files are GPG-signed by the DRBL project.

Who it's for

Clonezilla is best for technically capable individuals restoring or duplicating a machine, and administrators imaging servers or deploying systems at scale. Its used-block copying, encryption, multiple transfer destinations, and server editions provide useful breadth without a license charge. It is a poor fit for users who need online backups, incremental history, or quick recovery of individual files.

Pros and cons

• Pros: Used-block imaging on supported file systems avoids copying unused space.
• Pros: Live and server editions span one-machine recovery and simultaneous large deployments, with multicast or BitTorrent options.
• Pros: Local, SSH, Samba, NFS, and WebDAV storage, plus AES-256 encryption, allow several storage and protection approaches.
• Cons: No online, differential, or incremental imaging makes it a weaker choice for ongoing backup schedules.
• Cons: Images cannot be mounted or browsed, preventing direct single-file recovery.
• Cons: A destination partition smaller than the source cannot be used, limiting migration flexibility.

Alternatives

Rescuezilla is another free option for users who want a bootable USB or CD-ROM workflow without a license or serial number.

HDClone is worth considering for private use when its free edition's 4 TB and 70 MB/s limits fit the job, or when a paid edition better matches the need.

Lazesoft Disk Image & Clone is a Windows alternative for personal, non-commercial use across up to three PCs in one household, with a separate professional edition for business use.

Carbon Copy Cloner is an alternative for macOS users; its personal and household license covers non-commercial home use on all computers in the household.

Casper is a Windows option with a free trial and a paid Home Edition upgrade license for registered Casper 10 owners.

EaseUS Disk Copy is a Windows alternative for students seeking a one-computer monthly plan, with student verification and one month of free upgrades.

OSFClone is a free self-booting disk imaging utility for Linux and Windows; installing it to USB requires a drive of at least 2 GB.

doClone is a free Linux option for disk and partition imaging and restoration.

Verdict

Choose Clonezilla if you need free, flexible disk imaging for one machine or repeatable deployments across many systems, and can work within a boot-based workflow. Its breadth and mass-cloning options are strong reasons to use it; look elsewhere if your priority is online, incremental backup or direct access to individual files inside an image.