Multi-Boot is a computer setup that allows a user to install and run multiple operating systems on a single machine. This means you can choose which operating system to use each time you start your computer, such as Windows, Linux, or macOS. Each operating system is installed on a separate partition of the hard drive, keeping them organized and independent. This setup is useful for various reasons, including testing software, running applications that are only available on certain systems, or using different environments for development. Multi-Boot systems can enhance flexibility and efficiency for users with diverse computing needs.