How to check BIOS boot mode (UEFI or Legacy)
How to find out whether your system uses UEFI or Legacy (BIOS) boot mode.
Many programs require UEFI boot mode. If you have Legacy (or “Legacy”) set, the software may not run. Below is how to check the mode in Windows.
Method 1: System Information (msinfo32)
- Press Win + R, type
msinfo32, press Enter. - In the opened window, select System Summary in the left pane.
- On the right, find the BIOS Mode row. The value will be UEFI or Legacy.
If it says UEFI, the mode meets program requirements. If Legacy, switching to UEFI usually requires reinstalling Windows with UEFI boot (or configuring BIOS/UEFI and converting the disk to GPT; details depend on your PC manufacturer).
Method 2: PowerShell
- Press Win + X, choose Terminal or Windows PowerShell.
- Run:
Get-ComputerInfo | Select-Object BiosFirmwareType - In the output, Uefi means UEFI mode, Bios means Legacy.