Chain booting is a process in which one bootloader loads and transfers control to another bootloader, rather than directly loading an operating system. This technique is often used in multi-boot environments, allowing users to select from multiple operating systems or boot configurations. Chain booting enhances flexibility and compatibility, especially when different operating systems require unique bootloaders or when custom boot sequences are needed. It is commonly used in cybersecurity and system administration to facilitate secure, controlled, and complex boot processes, ensuring that each stage of the boot sequence is verified or customized as required.