Synopsis # OpenBSD follows a straightforward, well-documented boot process designed for reliability, clarity, and security. The boot mechanism consists of several distinct stages that begin with firmware (such as BIOS or UEFI) and conclude with the system transitioning to multi-user mode after executing startup scripts. This chapter describes each stage, including bootloaders, kernel initialization, and early userland processes. Boot Stages Overview # The boot process on OpenBSD systems typic...