Prep for Windows 11: Convert to GPT, Enable UEFI & Secure Boot

So I just wrote this guide up to help someone online and I figured I might as well post it here in case it helps someone in the future! Windows 11 will have some specific requirements to install that Windows 10 did not, including requiring Secure Boot. Most PCs made after 2013 have this as a standard thing, but it may not be enabled for you. Here’s how you can check and how you can make sure your PC is ready for Windows 11, which comes out in October of 2021.