Representative of the various embodiments is a method for implementation during a computer's boot sequence to load a selected operating system (OS) of interest. For purposes of such a method the computer includes a system BIOS, a video BIOS, and a customary boot loader accessible from a pre-determined address pointed to by a system interrupt pointer. During system BIOS execution, the system interrupt pointer is redirected to an alternate address from which a replacement boot loader is accessible. The selected OS of interest is then loaded via the replacement boot loader rather than the customary boot loader.