Convert MBR to GPT (Fix Secure Boot & UEFI) | Windows Guide

Watch the video:

0:00 - Intro/Explanation
0:15 - Does your motherboard support UEFI?
1:14 - Check if drive is GPT or MBR
2:04 - Bitlocker
2:44 - Convert MBR drive to GPT
3:54 - Enable UEFI mode

When enabling Secure Boot and UEFI mode: Your drive needs to be set to GPT instead of MBR (an older drive partitioning scheme). While converting from one to the other is 1 command, there’s a few things to look out for. This video covers everything you need to know and more!

mbr2gpt /validate /allowFullOS
mbr2gpt /convert /allowFullOS

Restart to BIOS: shutdown /r /fw