Clonezilla

Overview

Clonezilla is a bootable disk and partition imaging tool for deploying systems and recovering machines from bare-metal failures. It suits administrators and technically comfortable users who need to clone one computer or roll out images to many; it is a poor fit for everyday file-level backup or work that must happen while systems stay online.

Its breadth of file-system support and no-cost license make it useful across mixed environments. The trade-off is a recovery workflow centered on whole partitions or disks: there are no incremental images, and an image cannot be browsed to retrieve an individual file.

Explore Disk Cloning Software, OS Deployment Software, Disk Imaging Software, Bare Metal Provisioning Software, and Backup software.

Key features

Imaging across file systems

For supported file systems, Clonezilla saves and restores used blocks, avoiding a full sector copy. Unsupported file systems are copied sector by sector, which can mean a less selective image. Support spans Linux, Windows, Mac, BSD, Minix, and VMware file systems, including ext4, NTFS, APFS, and VMFS3/5. Chrome OS and Chromium OS file systems are also included in the supported range.

Images can be stored locally or on SSH, Samba, NFS, and WebDAV servers. MBR and GPT are supported, and Clonezilla live boots on BIOS or UEFI machines. Images can be encrypted; AES-256 is offered to secure data access, storage, and transfer. These options suit administrators who need to work across varied systems and storage destinations, though they do not turn Clonezilla into an online backup service.

Single-machine and mass deployment

Clonezilla live targets one machine, while Clonezilla lite server and Clonezilla SE can clone many computers simultaneously; the project describes deployments to 40-plus computers. SE supports multicast, and lite server supports BitTorrent for massive deployment. That makes the server editions more relevant for fleet rollout than a one-machine recovery, but they require choosing the deployment approach that fits the environment.

Boot requirements and constraints

Clonezilla live requires an x86 or x86-64 processor, 196 MB of RAM, and a boot device such as CD/DVD, USB, PXE, or hard drive. Its bootable design is useful when restoring a machine outside its normal operating system, but it rules out online imaging. A destination partition must be at least as large as the source, limiting direct restoration to smaller partitions. Because images cannot be explored or mounted, retrieving one file means the image cannot provide a direct file-recovery path.

Pricing

Clonezilla costs nothing. The software is free and open source under GPL version 2, with the same no-cost offering covering Clonezilla live, lite server, and SE rather than reserving mass deployment for a paid tier. This is a strong fit when budget matters more than incremental backups or browseable images; there are no paid plan tiers to weigh against those limitations.

Platforms

Clonezilla runs in a Linux-based bootable environment, while imaging support covers file systems used by Linux, Windows, Mac, BSD, Minix, VMware ESX, and Chrome OS/Chromium OS. It is therefore not a native Windows or macOS backup app: those systems enter the picture through the file systems Clonezilla can image. The listed platforms include Linux, macOS, self-hosted, and Windows. 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

Choose Clonezilla for bare-metal backup, disk duplication, and operating-system deployment when a bootable workflow and whole-disk or partition restoration suit the job. A systems administrator can use the server editions for simultaneous rollouts, while an individual can use live for one machine. Look elsewhere for scheduled online imaging, incremental or differential backups, or convenient recovery of a single document from an image.

Pros and cons

Pros

• Broad file-system coverage, including ext4, NTFS, APFS, and VMFS3/5, helps when managing machines across different operating systems.
• Used-block imaging on supported file systems avoids copying unused space; local, SSH, Samba, NFS, and WebDAV destinations offer flexible image storage.
• Live, lite server, and SE cover one-machine cloning through deployments to 40-plus computers, with multicast or BitTorrent options for large rollouts.
• Free and open source under GPL version 2, with AES-256 encryption and both BIOS and UEFI boot support.

Cons

• No online imaging or incremental and differential backups, so it cannot serve as a continuing, low-disruption backup routine.
• Images cannot be mounted or browsed for individual-file recovery, making it unsuitable when restoring a few files is the priority.
• The destination partition must be at least as large as the source, restricting restores to smaller partitions.
• Unsupported file systems require sector-to-sector copying rather than used-block imaging.

Alternatives

• HDClone is worth considering for private use if its free edition's up-to-4-TB capacity and 70 MB/s limit suit the job; its Basic Edition is €19.90, paid once for private use on up to 2 PCs.
• Lazesoft Recovery Suite fits home users seeking recovery tools alongside disk imaging and cloning, with its Home Edition for non-commercial use.
• Redo Rescue is another free option for Linux, macOS, and Windows users; its maker identifies the code as GNU GPLv3 and says it can be audited, modified, and copied at no cost.
• Rescuezilla is a free alternative for users who want a tool that runs from a bootable USB or CD-ROM without a license or serial number.
• AOMEI Backupper suits Windows users seeking a perpetually free PC-backup plan rather than a Linux-based bootable workflow.
• Lazesoft Disk Image & Clone offers a free Home Edition for personal, non-commercial use on up to 3 PCs in one household.
• Casper is a Windows alternative with a free trial.
• doClone is another free option for Linux.

Verdict

Clonezilla is a strong choice for technically capable users who need free, broad-compatibility disk imaging or large-scale cloning, especially when bootable recovery and deployment matter more than convenience. Its main reason to choose is that one free tool covers used-block imaging and multi-machine deployment; its main reason to look elsewhere is the absence of online and incremental backups and direct access to individual files inside images.