WiseCleaner Think Tank
Encounter difficult computer problems?
All about maintenance and optimization of your Windows System.
Aug 20, 2025
Modern Windows PCs no longer rely on the traditional BIOS firmware. Instead, they use UEFI (Unified Extensible Firmware Interface), which is a faster, more secure, and more feature-rich replacement. Many Windows 11 features, such as Secure Boot and BitLocker, require UEFI.
Stay with us to check if your PC uses modern UEFI firmware or the older Legacy BIOS in Windows 11.
Press Windows + R to open the Run dialog.
Type msinfo32 and press Enter.
In the System Summary window, find the BIOS Mode entry:
Right-click the Start button and choose Disk Management.
Right-click Disk 0 and select Properties.
Go to the Volumes tab, and look for Partition style. UEFI systems typically use GPT (GUID Partition Table) instead of MBR (Master Boot Record).
Checking your firmware mode in Windows 11 is quick, and ensures you are making the most of your system’s capabilities. If you discover your PC is still on Legacy BIOS and supports UEFI, you may consider converting your system disk from MBR to GPT and switching to UEFI mode, but back up your data first.
