käynnistysvalikot

Käynnistysvalikot, known in English as boot menus or startup menus, are temporary interface elements that appear during the computer startup process, before the operating system fully loads. Their primary purpose is to allow the user to select specific boot options or access advanced system settings.

A common type of käynnistysvalikko is the boot device selection menu, which enables the user to choose which storage device (e.g., hard drive, SSD, USB drive, CD/DVD drive) the computer should attempt to boot from. This is particularly useful when installing a new operating system from a USB stick or DVD, or when troubleshooting boot issues.

Another type of käynnistysvalikko is the advanced startup options menu. This menu typically offers access to system recovery tools, safe mode, startup repair, command prompt, and other diagnostic utilities. These options are crucial for resolving software conflicts, driver problems, or corrupted system files that prevent the operating system from starting correctly.

Accessing a käynnistysvalikko usually involves pressing a specific key during the initial power-on self-test (POST) sequence. The key varies depending on the computer manufacturer and BIOS/UEFI firmware, but common keys include F2, F10, F12, Del, or Esc. The exact key is often displayed briefly on the screen during startup. These menus are a fundamental part of computer hardware and software interaction, providing essential control over the boot process.