How to Check if BIOS is in UEFI Mode for Windows 11

Windows 11 requires a modern Unified Extensible Firmware Interface (UEFI) rather than a legacy BIOS to meet security baselines such as Secure Boot. This guide explains how to quickly verify if your current motherboard configuration is running in UEFI mode using built-in Windows utilities or directly via your motherboard settings.

Method 1: Use the System Information Tool

The fastest way to verify your BIOS mode while inside Windows is through the System Information panel.

  1. Press Windows Key + R to open the Run dialog box.
  2. Type msinfo32 and press Enter.
  3. In the System Summary section, locate BIOS Mode in the right-hand pane.
  4. If the value shows UEFI, your motherboard is correctly configured. If it shows Legacy, your system is not utilizing UEFI mode.

Method 2: Check Partition Style in Disk Management

UEFI installations require a GPT (GUID Partition Table) partition style rather than the older MBR (Master Boot Record) format.

  1. Right-click the Start button and select Disk Management.
  2. Right-click your main Windows installation drive (usually Disk 0) and select Properties.
  3. Go to the Volumes tab.
  4. Check the Partition style entry:
    • GUID Partition Table (GPT): Indicates a standard UEFI configuration.
    • Master Boot Record (MBR): Indicates a Legacy BIOS configuration.

Method 3: Check Directly in the Motherboard BIOS/UEFI

You can also view the active boot mode directly within your motherboard firmware.

  1. Restart your computer.
  2. Press the designated setup key as your computer boots (common keys include Del, F2, F10, or F12).
  3. Navigate to the Boot or Security tab.
  4. Look for the Boot Mode, Boot Priority, or CSM (Compatibility Support Module) setting.
  5. Ensure that the mode is set to UEFI and that CSM is disabled to ensure full Windows 11 compatibility.