This is legacy
Need some extra thing
For Legacy (non UEFI):
1. Download OpenCore: https://dortania.github.io/builds/?product=OpenCorePkg&viewall=true
2. Install LegacyBoot (first on USB installer, after on boot drive). .../OpenCore-0/Utilities/LegacyBoot
3. Install OS
4. Run LogoutHook for emulated NVRAM: ..../OpenCore-0/Utilities/LogoutHook
5. On NVRAM tab