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This is a no-fuss tutorial to help you change BIOS Mode from Legacy to UEFI in Windows 10.
We promise it wont take more than a few minutes.
Basic Input/Output System (BIOS) is the first thing you wake up whenever you power on your box.
It allows for a proper handshake between the operating system and the attached hardware.
And from there on, you start using your system.
So, check out upfront and get comfortable before going ahead with the first.
Chances are, the option for UEFI wont be in the BIOS if youre using a really old PC.
But for recent ones, youll have this option to switch to the UEFI BIOS.
In that case, your PC should already be running on UEFI.
Lets start with the main course.
Check the current status.
TypeSystem Informationin the Search bar and click launch the appropriate result.
Press Windows+R, typediskmgmt.msc, and click OK.
So now that we know we have an MBR disk, we will venture to convert it to GPR.
As we are eligible to use that tool, lets head towards the command prompt.
MBR to GPT Conversion
bring up the command prompt with the administrator privileges.
For this, typecmd, then click theRun as administratorin the right panel.
Afterward, entermbr2gpt /validate /allowFullOSin the command prompt:
Check that the validation is successful.
Go through thissolutionfrom the Microsoft community if youre gettingDisk layout validation failed.
You may not get it, and this wont affect the conversion process even if its there.
Conclusively, the process is complete, and weve changed BIOS Mode from Legacy to UEFI.
This process created a 100 MB EFI partition from the main disk.
So check that you really need to do this before going through all this trouble.
If it aint broke, dont fix it!
Instead, whats worth fixing are the hearts of countless people made ineligible from getting Windows 11.
So check out Geekflares guide toinstall Windows 11 on unsupported PCs.
