This is a backup of the guide found here http://www.rodsbooks.com/bios2uefi/ Just in case it goes down and also because i find it very helpful when dealing with hackintoshes and non uefi pcs.
backup link:
https://ipfs.io/ipfs/QmZUngpiqNdWKWNde6UMDVAsa2UrNUnPffENhyPg4JetZp/