IF the bios is set for Legacy only, you will get legacy only, if it is set for uEFI with Legacy Options, you will see both options, if it is uEFI only then you will get uEFI only.
Best option is to set it to uEFI Only.
Also if secure boot is turned off turn it off and then turn it back on once the OS is installed. If you ever wanted to boot from something else you would have to turn this off and back on again.