Windows 8 Certified Computers May Not Be Able To Boot Linux

According to an article by ITWorld, Microsoft requires that Windows 8-certified machines use UEFI (Unified Extensible Firmware Interface) with support for secure booting instead of the BIOS firmware.

This means that both the firmware and software used in the boot process must be signed by a trusted Certificate Authority and at the moment, none of the EFI Linux bootloaders is signed. So basically, if you buy a computer that includes the manufacturer's keys and Microsoft's keys, you won't be able to boot a Linux distribution.