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Firmware Windows Engineering Guide (WEG)

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The Firmware Windows Engineering Guide (WEG) provides a roadmap to follow through in implementing system firmware-related best practices.

In this section

UEFI security

Firmware update

SMBIOS

HTTPS

Wi-Fi support in firmware

Switch from legacy MBR disk to GPT disk with Windows 10

Firmware WEG FAQ

Configure system firmware for Windows 7 and later update for Windows 10

Sample PowerShell script to query SMBIOS locally

Firmware WEG terminology

The following terms are used throughout the Firmware WEG:

  • ACPI - Advanced Configuration and Power Interface

  • ACHI - Advanced Configuration Host Interface

  • BCD - Boot Configuration Data

  • BIOS - Basic Input/output System

  • CSM - Compatibility Support Module

  • EFI - Extensible Firmware Interface

  • eMMC - embedded Multi-Media Controller

  • ESRT – EFI System Resource Table

  • FFU - Full Flash Update

  • GPT - GUID Partition Table

  • GUID – Globally Unique Identification

  • HDD - Hard Disk Drive

  • HSTI / HSTS – Hardware Security Testability Interface / Specification

  • HVCI - HyperVisor Code Integrity

  • IOMMU - Input–output memory management unit

  • INT10 - BIOS interrupt call used for video basic display

  • MAT – Memory Attributes Table

  • MADT - Multiple APIC Description Table

  • MBR - Master Boot Record

  • MOR – Memory Overwrite Request

  • NVRAM - Non Volatile Random Access Memory

  • OEM - Original Equipment Manufacturer/Manufacturing

  • PCIe - Peripheral Component Interconnect express

  • RPMC – Replay Protected Monotonic Counter

  • SMBIOS – System Management Basic Input Output System

  • SoC - System on Chip

  • SPI - Serial Peripheral Interface

  • SSD - Solid State Drive

  • TCG - Trusted Computing Group

  • TPM – Trusted Platform Module

  • UEFI - Unified Extensible Firmware Interface

  • WAET - Windows ACPI EmulatedDevices Table

  • WDDM - Windows Display Driver Model

  • WEG – Windows Engineering Guide

  • WHQL - Windows Hardware Quality Lab

  • WinPE- Windows Pre-installation Environment

  • WinRE - Windows Recovery Environment

  • WPBT - Windows Platform Binary Table

  • WSMT - Windows SMM Security Mitigations Table