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SMM is a special-purpose operating mode provided for handling system-wide functions like power management, system hardware control, or proprietary OEM designed code. It is intended for use only by system firmware ( BIOS or UEFI ), not by applications software or general-purpose systems software.
A PBA environment serves as an extension of the BIOS, UEFI or boot firmware and guarantees a secure, tamper-proof environment external to the operating system as a trusted authentication layer. [2] The PBA prevents any operating system from loading until the user has confirmed he/she has the correct password to unlock the computer. [2]
Unified Extensible Firmware Interface (UEFI, / ˈ juː ɪ f aɪ / or as an acronym) [c] is a specification for the firmware architecture of a computing platform.When a computer is powered on, the UEFI-implementation is typically the first that runs, before starting the operating system.
In this guide, we'll show you the steps of creating a USB flash media to perform an in-place upgrade or clean installation of Windows 10 on computers using UEFI firmware with the Media Creation ...
An option ROM for the PC platform (i.e. the IBM PC and derived successor computer systems) is a piece of firmware that resides in ROM on an expansion card (or stored along with the main system BIOS), which gets executed to initialize the device and (optionally) add support for the device to the BIOS.
An unlocked bootloader, showing additional available options. Bootloader unlocking is the process of disabling the bootloader security that makes secure boot possible. It can make advanced customizations possible, such as installing custom firmware.
UEFI support in Windows began in 2008 with Windows Vista SP1. [22] The Windows boot manager is located at the \EFI\Microsoft\Boot\ subfolder of the EFI system partition. [23] On Windows XP 64-Bit Edition and later, access to the EFI system partition is obtained by running the mountvol command. Mounts the EFI system partition on the specified drive.
It can be used to enable computers without built-in PXE capability to boot from the network, or to provide additional features beyond what built-in PXE provides. While standard PXE clients use only TFTP to load parameters and programs from the server, iPXE client software can use additional protocols, including HTTP , iSCSI , ATA over Ethernet ...