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, providing flexibility for different tasks or software requirements. For example, you might have both Windows and Linux installed, allowing you to switch between them as needed. To manage a multi-boot system, a bootloader is used. This software presents a menu at startup, letting you select the desired operating system. Popular bootloaders include GRUB for Linux systems and Windows Boot Manager for Windows systems, making it easier to navigate between the installed operating systems.