Remastersys — custom Live CD and backup tool for Linux

How it works

Rather than assembling a distribution from packages, Remastersys captures the current filesystem and converts it into a bootable ISO. Users can opt to include personal files to make a full backup, or exclude home directories to produce a generic, redistributable live image. The resulting ISO can be tested in a virtual machine, burned to optical media, or written to USB.

Key characteristics

• Creates bootable ISO images from a running Linux system.
• Can produce either a personalized backup or a clean, distributable live system for redistribution to other machines (distributions).
• Typically offered as a script with command-line controls and optional graphical front ends.

Remastersys is often used to snapshot a working configuration for migration or to deliver a preconfigured environment for training, demonstrations, or niche distributions. Educators, system administrators and developers have used it to package tailored desktops with specific applications and settings.

History and related tools

The tool emerged from community needs to customize Ubuntu-based systems without rebuilding an entire distribution. Over time, official development has varied and community forks or alternative utilities have appeared. Remastering approaches range from capture-of-installed-systems (as Remastersys does) to build-from-scratch tools provided by other projects.

When evaluating remastering tools, consider maintenance, compatibility with current system components, and whether you need an installable live image or only a data backup. For additional resources and alternative methods see the project links above and community guides on creating custom live media.