Check UEFI or Legacy for Windows 10 UEFI Secure Boot

Byjsiazar

When installing or troubleshooting an operating system, it’s important to know whether your Windows system is using UEFI (Unified Extensible Firmware Interface) or Legacy boot mode. UEFI is the modern standard that offers advantages like faster boot times and better security, whereas Legacy BIOS is the traditional boot mode, now largely replaced by UEFI in newer systems. Additionally, understanding the role of windows 10 uefi secure boot is crucial for ensuring your system’s integrity. This knowledge not only helps in installation but also in maintaining a secure environment.

This article will guide you through several methods to determine whether your system is running in UEFI or Legacy boot mode. The steps apply to both Windows 10 and Windows 11, as both operating systems support both boot modes.

Method 1: Using System Information Tool (Windows 10 & 11)

Understanding Windows 10 UEFI Secure Boot

  1. Open System Information:
    • Press Windows + R to open the Run dialog box.
    • Type msinfo32 and press Enter to open the System Information tool.
  2. Check Boot Mode:
    • In the System Information window, look for the “BIOS Mode” entry.
    • Under BIOS Mode, you’ll see either UEFI or Legacy:
      • UEFI indicates your system is using UEFI boot mode.
      • Legacy indicates your system is using the older BIOS boot mode.
    This method is quick and works the same in both Windows 10 and Windows 11.

Method 2: Using Disk Management (Windows 10 & 11)

  1. Open Disk Management:
    • Press Windows + X and select Disk Management from the menu.
  2. Check Partition Style:
    • Right-click on Disk 0 (or your primary disk) and select Properties.
    • Go to the Volumes tab.
    • Look for Partition Style:
      • If it says GUID Partition Table (GPT), your system is using UEFI.
      • If it says Master Boot Record (MBR), your system is using Legacy BIOS.
    GPT is associated with UEFI, and MBR is tied to Legacy BIOS mode.

Method 3: Using Command Prompt (diskpart) in Windows 10 & 11

  1. Open Command Prompt as Administrator:
    • Press Windows + X and select Command Prompt (Admin) or Windows PowerShell (Admin).
  2. Run diskpart:
    • Type diskpart and press Enter.
  3. Check Disk Information:
    • Type the following command: bashCopyEditlist disk
    • Press Enter to see a list of disks.
  4. Look for GPT Indicator:
    • In the list of disks, check if any disk has a GPT label under the Gpt column.
      • If there is a *** (asterisk)** under the Gpt column for the primary disk (usually Disk 0), your system is using UEFI.
      • If there is no asterisk, your system is using Legacy BIOS mode.

Method 4: Checking UEFI Firmware Settings (Windows 10 & 11)

  1. Restart Your PC and Enter UEFI/BIOS:
    • To access UEFI/BIOS, restart your PC and press the necessary key to enter UEFI/BIOS setup (commonly F2, Delete, Esc, or F10—check your PC’s manual).
  2. Check Boot Mode:
    • Once inside UEFI/BIOS, look for the Boot Options or Boot Mode section.
    • If the system is set to UEFI, it will display this mode. If it’s set to Legacy or CSM (Compatibility Support Module), the system is using the older BIOS boot method.

Method 5: Using Windows Registry (Windows 10 & 11)

  1. Open Registry Editor:
    • Press Windows + R to open the Run dialog.
    • Type regedit and press Enter to open the Registry Editor.
  2. Navigate to the Boot Configuration:
    • Go to the following path: sqlCopyEditHKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\BootStatusPolicy
  3. Check the Value:
    • Look for a UEFISecureBoot value. If it’s present and set to 1, your system is booting with UEFI.
    • If the value doesn’t exist or is set to 0, your system is using Legacy BIOS mode.

Conclusion

Whether you’re using Windows 10 or Windows 11, knowing whether your system is using UEFI or Legacy boot mode is important for tasks like partitioning, dual-boot setups, or troubleshooting boot-related issues. The methods provided here—such as using System Information, Disk Management, Command Prompt, UEFI settings, or the Windows Registry—apply to both operating systems.

For modern systems, it’s recommended to use UEFI for better performance, enhanced security, and support for larger disk sizes. If you plan to set up a dual-boot system or solve boot problems, understanding your boot mode will make the process smoother.

Feel free to use this guide for both Windows 10 and Windows 11 when you need to check your system’s boot mode!