Friday, November 18, 2011

UEFI BIOS

The "pre-boot" environment.

Sometimes referred to as BIOS, the pre-boot environment (PBE) is the location of the code that is responsible for starting your computer when it is first switched on. Hardware is defined and configured for a specific operating system to load and perform in the way that is required by you the owner and the manufacturer of the hardware.

The PBE is where you can control what drives to use and their type, the memory allocation and timing, the cpu settings and much more. Some of the features of the hardware used in your computer may not be addressable  from the PBE. This is usually by design as changing the settings would either compromise the operation of the computer or the wishes of the operating system vendor.

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