How to Convert Legacy BIOS into UEFI in Windows 10 or 11

Sometimes, the screen displays information about the manufacturer when you turn on your computer. The BIOS is also known as the manufacturer’s information. It has two types: Legacy BIOS or UEFI. Modern computers have the UEFI BIOS, while older motherboards still use legacy BIOS firmware.

You can change the BIOS of your computer completely. However, you should be careful. It could cause irreversible damage. This guide will help you move from Legacy BIOS into UEFI. Let’s get started!

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Why Convert Legacy BIOS into UEFI

When you turn on your computer, you activate the BIOS. This loads all of the hardware. The BIOS is what controls how a computer turns on, how it will operate basic functions, and from which drive it will boot.

It is also used to identify and configure items like hard drives, optical drives and floppy drives.

The Legacy BIOS is a feature that older computers have, and it manages data flow between your operating systems and any connected devices. It has some limitations. It cannot recognize drives larger that 2.1TB and setup programs are text-only.

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Modern PCs have UEFI BIOS which can be customized and performs the same task better. GUID Partition Tables are used by UEFI to support drives larger than 2.2TB. This is in addition to the obsolete Master Boot Record (MBR). All information regarding startup and initialization is stored in the UEFI’s EFI file,.efi. This file is located on an EFI System Partition named ESP. The ESP partition also contains a boot loader program that installs the operating system.

Simply put, switching to UEFI can be a worthwhile upgrade and will provide you with these benefits:

  • Performance improvements for the entire computer
  • Quick boot time
  • Compatible issues with Legacy BIOS are eliminated

Furthermore, UEFI is safer than Legacy BIOS. Secure Boot by UEFI ensures that only authorized operating systems are allowed to be installed on your computer. UEFI is still susceptible to security attacks.

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How to check if you are using Legacy BIOS

If you’re not sure what version of BIOS you are using, you can find out by following these steps:

  1. Type Format and create hard disk partitions Click in the search area on the taskbar. Open . This should activate the Disk Management tool.
  2. Right-click the Windows installation disk (Disk 1) in the Disk Management Tool and choose “Select”. Properties From the context menu.
  3. In the Properties window, click on the Volumes tab. If Master Boot Record (MBR), next to Partition type, is displayed on your system, it means that Legacy BIOS is being used.
  4. If GUID Partition Table is displayed (GPT), then your system is already on UEFI and you don’t need to do any other!

Once you have determined which BIOS you use, you can now move on to the practical steps.

How to Upgrade to UEFI

Here are some things to know before you dive into converting Legacy BIOS from UEFI.

  1. Windows 10 v1703 and higher should be your Windows version. If you don’t know what operating system version of Windows you are on, click here. Win R keys You can do this by pressing the ‘Enter’ key simultaneously on your keyboard Type in the text box of the dialog box. Winver Hit Enter . You can see the current Windows version in the About Windows box.
  2. The target disk should not contain more than three partitions. You can merge or delete any partitions that are more than three on your Windows 10 installation disk.
  3. BitLocker doesn’t allow Windows to convert your Legacy BIOS drive to UEFI. We recommend disabling BitLocker and suspending it before you continue.
  4. After the conversion is completed, you might need to modify your firmware settings to switch from Legacy BIOS or UEFI. You will need to change between the two depending on the motherboard manufacturer. Make sure you have your manual.
  5. During the conversion, you will not lose any data. To be sure, however, you should backup your data .

How to Convert Legacy BIOS To UEFI

Let’s start the conversion process now that we have confirmed that Legacy BIOS is installed on your system and created a backup.

Here’s what you should do:

  1. On your keyboard, simultaneously press Winand X keys.
  2. Choose Shut down, or sign out Click on the button to continue Restart While you are holding the Shift key From the context menu that appeared on screen.
  3. The Advanced Startup screen should not be displayed on your system.
  4. Click on the link to continue Troubleshooting .
  5. Choose Option Advanced Please see the next window.
  6. Click on the button below to continue Command Prompt .
  7. To execute the command, enter the following command once you have opened the Command Prompt window.
  8. mbr2gpt /validate
  9. This command should verify the target disk. If the Validation completed successfully message appears, you can continue to the next step. If an error message is displayed, it means that the system or disk may not be able to handle the conversion.
  10. If you are unable to validate the command above, please execute the following command.
  11. mbr2gpt /validate /allowFullOS
  12. After the disk has been validated, you can execute the following command in order to complete the conversion.
  13. mbr2gpt /convert
  14. Windows will now start the conversion process. Wait for the conversion process to finish, then restart your computer.
  15. After rebooting, open the firmware settings screen on your motherboard to switch from Legacy BIOS (UEFI) mode. This procedure will vary according to the motherboard you have. Please refer to your manual for details.
  16. Follow the above steps to confirm that you have been converted from Legacy BIOS into UEFI.

BIOS Updated successfully

Successfully completed the Legacy BIOS upgrade from UEFI. The UEFI system has more features and is more powerful than BIOS. UEFI reduces boot time and provides security features like “Secure Boot,” which stops the computer being booted from unsigned or unauthorized programs. UEFI is the next generation in BIOS.

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