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The MBR2GPT tool is available on Windows 10 version 1703 and later.

Search for Partition style under Disk information. You can check the disk partition style under the Volumes tab in Properties. If you’re already on UEFI, the disk partition style will be GPT. If you’re using BIOS, your disk partition style will be MBR. Next, you want to check your disk partition style to confirm whether you’re running the Legacy BIOS or UEFI. In the app, right-click on the disk on which you’ve installed Windows and select Properties. This will take you to the Disk Management app. Search for Create and format hard disk partitions in the Start Menu and open the Best match. Open the Disk Management app to verify which BIOS version you’re running. You don’t want to have to go through the entire process only to find out you were using UEFI the whole time. Verify that you’re currently using Legacy BIOS. You need to get a few things in order before we talk about changing BIOS from Legacy to UEFI.

UEFI is more robust and removes constraints associated with BIOS.įor instance, UEFI supports partitions of up to 9 ZB, offers faster boot time, and provides security features like “Secure Boot.” Getting Ready to Convert Legacy BIOS to UEFI # UEFI, much like BIOS, is low-level software that your computer runs when you press the power button and before booting the OS. Then came UEFI (Unified Extensible Firmware Interface). Hardware developments over the past decade and a half warranted a new firmware. BIOS did have some constraints though.įor instance, BIOS uses Master Boot Record (MBR) to define a maximum partition capacity of 2.2 TB. BIOS first appeared long ago and worked perfectly well. UEFI #īIOS (Basic Input/Output System) is a piece of code that your microprocessor requires to start up after you press the computer’s power button. You can invoke the MBR2GPT tool using Command Prompt, and two commands later, you’ll have switched from Legacy BIOS to UEFI.