I have seen so many people doing this, and I wanted to try on my 2015 MBP. I bought a dvd burner and have already gone through two DVDs that wouldn't boot. First one appears but just boots to macos, other one doesn't do anything. I have used a normal ISO, and a modified ISO with the Windows 10 EFI folder, which ended up being the one that never showed up on the boot menu. If anyone has any idea on how to fix this, it would be greatly appreciated!