This guide from Microsoft shows the steps to convert the boot method of your computer.
https://answers.microsoft.com/en-us/windows/forum/all/convert-an-existing-windows-10-installation-from/aa8c2de3-460b-4a8c-b30b-641405f800d7 https://www.windowscentral.com/how-convert-mbr-disk-gpt-move-bios-uefi-windows-10 |