[Buckeye McFrog]

It had a boot order but the options were greyed out.
Could not choose any option other than Boot from CD
while the UEFI Secure Boot was still in place.

[ShadowAce]

Gotcha. That truly sux,

[ShadowAce]

I would also think that "secure boot" means NOT booting from CD, rather than forcing to boot from CD/DVD.

But what do I know? I'm just an IT professional with over 30 years experience.