F8 and Esc should work. The change page [1] mentions also holding shift.
It also mentions "sudo grub2-editenv - unset menu_auto_hide".


But it is interesting that:

1. it does not work

2. it does not unhide itself after failed boot.

Both sounds as a bugs to me.


V.


[1] https://fedoraproject.org/wiki/Changes/HiddenGrubMenu



Dne 18.9.2018 v 01:12 Chris Murphy napsal(a):
> I've got a Fedora 29 Silverblue installation in a VM. First boot I see
> the GRUB menu, and after that it's hidden. And I can't figure out how
> to unhide it. Boot is failing before I get multiuser login or ssh, so
> extracting information to troubleshoot/bug report isn't possible.
>
> Repeatedly pressing or holding Esc doesn't work.
> Spacebar doesn't work.
> F8 doesn't work.
>
> So now I'm stuck. Yeah, I can reinstall, and before rebooting make
> sure whatever is hiding the GRUB menu is disabled, every time I do
> installations. But the very reason why people were so vocal about this
> feature not happening is exactly this use case.
>
> This is a Fedora 29 host. Fedora 29 (silverblue, maybe it happens with
> Workstation as well) as guest. Virt-manager is what I'm using for
> interacting with the VM.
>
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