>> >> >> > This is out of context here because you can disable Secure Boot but >> >> >> > still use UEFI to make that work. You're trying to link to different >> >> >> > problems together. >> >> >> >> >> >> I think there's firmware out there which enables Secure Boot >> >> >> unconditionally in UEFI mode, but still has CSM support. >> >> > >> >> > The UEFI spec makes CSM and Secure Boot mutually exclusive. CSM >> >> > enabled renders Secure Boot impossible. So I'm not sure how the >> >> > firmware can simultaneously enforce Secure Boot, but then permit the >> >> > loading of non-compliant bootloaders. >> >> >> >> I meant that without CSM, Secure Boot is always enabled. I don't know >> >> if Fedora UEFI installations work on such systems when CSM is enabled. >> > >> > CSM enabled systems get a BIOS GRUB installation just as if it was a >> > system without UEFI. The system gets an MBR, GRUB boot code in MBR, >> > GRUB stage 2 in the MBR gap, etc. >> >> Okay, then Secure Boot is mandatory on these systems as far as Fedora is >> concerned once Fedora removes BIOS support, just as I suspected. > > > There are some Acer systems that make it harder to disable secure boot, but > it's still possible. I've not heard of cases where you cannot at all disable > secure boot.
On the systems, if there are any, that don't allow disabling of secure-boot, they definitely wouldn't allow disabling UEFI either, UEFI and secure boot are necessarily mutually exclusive, but a system that won't allow you to disable secure-boot definitely wouldn't support BIOS either. _______________________________________________ devel mailing list -- [email protected] To unsubscribe send an email to [email protected] Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/[email protected] Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
