Whether you plan on using Windows 8 or not, everyone buying a PC in the future will end up with the Microsoft-driven Secure Boot feature enabled. Secure Boot prevents “unauthorized” operating systems and software from loading during the startup process.
Secure Boot is a feature enabled by UEFI
– which replaces the traditional PC BIOS – but Microsoft mandates specific implementations for x86 (Intel) and ARM PCs. Any computer with a Windows 8 logo sticker has Secure Boot enabled.