Where did my UEFI-DVD boot option go?

[Juanlo]

Last time I installed Windows on my Rampage IV formula I did it choosing UEFI-DVD boot device from BIOS. Today I'm trying to reinstall and this option is gone. Last time, I could choose UEFI mode or "standard" mode when booting from a DVD drive, but the UEFI option is gone. Maybe one of the latest BIOS updates removed it? I'm on BIOS 3204 right now.

If I try to boot from DVD using "standard" mode, Windows won't allow me to install it because it says that it can't be installed on a GPT drive.

At the BIOS I have set secure boot option to UEFI and CSM to auto. What can I do? How can I enable UEFI-DVD option in BIOS again?

[HiVizMan]

You have selected secure boot. Try with that disabled.

[Juanlo]

I can't disable it, just set it to UEFI or non-UEFI, and none of these work. I still can't choose UEFI-DVD boot from my BIOS like I did before

[Nodens]

Are you certain that the particular disc you are trying to boot has a UEFI loader on it? If it's the same disc you were using then maybe it's damaged. As far as secure boot goes, make sure it's set to the option that allows UEFI booting (not the option which actualy enables it and allows you to check bootloader certificates etc etc). I can't remember how the settings are named heh:) Other than that option nothing else would affect it other than discs that can't be booted in UEFI mode.

[Juanlo]

That's it Nodens, I have several disks here at it looks like the one I was trying didn't have a UEFI loader... damn it I feel stupid.

Thanks!

[Nodens]

Hehehe! No worries mate, it happens:)