I'm trying to do something similar on a Asus TUF FA506.
This doesn't support legacy boot at all, but to allow it to boot a UEFI stick built by Rufus I had to turn of secure boot and fast boot.
This way the laptop does give me the option of booting Ubunut if I tap esc 5 times during boot or hold F2 during boot then F8 for boot menu.
I could also swap the boot order to make Ubuntu the default.
But, looks like 20.04 doesn't support the dual Nvidia\Radeon graphics as I just get a continuos Noveu (sp?) error message scrolling on boot.
--
ATB,
Karl


On Mon, 13 Apr 2020 at 09:20, Mark Rogers <mark@more-solutions.co.uk> wrote:
On Mon, 13 Apr 2020 at 07:10, Mark Rogers <mark@more-solutions.co.uk> wrote:
> I can try 19.10 if anyone thinks that might be the issue, but the fact
> that even boot repair doesn't give me any options makes me think this
> is a UEFI/Windows issue not an installer one.

It occurred to me after posting that I was being lazy and should try
19.10. Which I have now done, and it behaved exactly the same as
20.04. So the problem is *not* the beta.

--
Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450
Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

_______________________________________________
main@lists.alug.org.uk
http://www.alug.org.uk/
https://lists.alug.org.uk/mailman/listinfo/main
Unsubscribe?  See message headers or the web site above!