We will be discussing the following two methods by which we can change the BIOS Mode from Legacy to UEFI without reinstalling Windows 11/10- Convert MBR to GPT using the Windows built-in utilities.

This guide walks you through steps to help you mirror the Boot Hard drive on Windows (Legacy or UEFI). This is useful ... Reserved and Primary partitions. 2] Convert the Secondary disk or DISK ...

Once you're in the BIOS, try to find an option called Boot mode or something to that effect, and see if you can change it from Legacy to UEFI ... likely solution is to convert your disk to ...