How to check the computer that supports EFI / UEFI or Legacy BIOS
When the computer boots, the firmware interface controls the boot process of the computer and then transfers control to Windows or another operating system. UEFI is the 'alternative' to replace the old BIOS firmware interface and the Extensible Firmware Interface (EFI) specification 1.10.
So how do I know if Windows starts in UEFI or Legacy BIOS mode, please refer to the following article of Network Administrator.
1. Check that the computer is UEFI or Legacy via Disk Management
Check that Windows boots in UEFI or Legacy via Disk Management on Windows 10, 7, 8, and 8.1.
1. On Windows 8 or 8.1 , open Power User Menu by pressing Windows + X key combination, then click Disk Management .
2. On Windows 10 and Windows 7, press Windows + R key combination to open the Run command window, then enter diskmgmt.msc into the Run command window and press Enter or click OK .
3. If the UAC window appears, click Yes to continue.
4. If the Windows drive displays the EFI or UEFI partition as shown below, then it installs with EFI / UEFI.
If there is no UEFI or EFI as shown below, your computer only supports Legacy.
2. Check if UEFI or Legacy is on System Information
This method works on Windows 10, 8 and Windows 8.1.
1. Press Windows + R key combination to open the Run command window, then enter msinfo32 there and press Enter.
2. On the System Information window, in the right pane of the System Summary section, you will see the BIOS Mode value as Legacy or UEFI .
3. Check through setupact.log
How to check this type of BIOS is also applicable on Windows 10, Windows 7, 8 and 8.1. This file is quite heavy, I tried it on Windows 10 and opened it for 5 minutes. If you can follow ways 1 and 2, you should not use way 3.
Enter Notepad in the search bar, right-click and choose Run as Administrator , the Notepad interface opens, click File > Open , then paste the following link in the File name box:
C:WindowsPanthersetupact.log
Wait a moment for Notepad to load the file, then press Ctrl + F. Enter the command line below into the Find what frame then click Find Next or press Enter:
Detected boot environment
Close the Find dialog box. You will see one of the following two lines:
Callback_BootEnvironmentDetect: Detected boot environment: BIOS Callback_BootEnvironmentDetect: Detected boot environment: EFI
BIOS corresponds to Legacy, EFI / UEFI corresponding to EFI and UEFI.
4. Method 4
Check on WinPE on Windows 8 and Windows 8.1.
1. Open the Command Prompt during the boot process.
2. On the Command Prompt window, enter the following command and press Enter:
wpeutil UpdateBootInfo
3. Enter the following command and press Enter:
reg query HKLMSystemCurrentControlSetControl / v PEFirmwareType
4. This command returns 0x1 if the computer boots in Legacy BIOS mode, or if the computer boots in UEFI mode.
Video tutorial to check whether the computer supports UEFI or Legacy BIOS
Refer to some of the following articles:
- Fix the 'This Device Can Perform Faster' error when connecting a USB device
- Display BIOS information on Windows 10 using Command Prompt
- Instructions for setting up BIOS and UEFI passwords to protect data on your Windows 10 computer safely
Good luck!
You should read it
- Steps to convert MRB to GPT drive structure in Windows 10
- Intel expects to end Legacy BIOS support by 2020
- Differences between UEFI and BIOS
- Concept of UEFI standard in computers
- How to check a computer using UEFI or BIOS
- 5 tips for using the BIOS to help you master your computer
- Why Intel killed the BIOS, switched to UEFI?
- How to turn off Secure Boot mode and open Boot Legacy mode
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