Dual Boot - Windows 10 + Manjaro 20.0 - weird behaviour of X570-board

Hi Megavolt,
Thanks a lot for your quick response.

That was also my first thought when it didn’t work out of the box - so I tried “boot, esp” and also “bios_grub” - what I am wondering about is, that choosing the Manjaro EFI Partition via Boot menu of the MSI board (via F11) it loads Manjaro, with both of the mentioned settings. I thought that UEFI should require always boot, esp for the EFI partition but somehow with F11 it worked also with bios_grup.

But considering, that the board finds and starts the Manjaro EFI via F11 manual selection in the boot menu I think the problem must be some specifics of the board itself and not of Manjaro.

I think the problem can be one of the following aspects:
a) The structure of the EFI directory (e.g. name of the directory / the EFI file)
b) I used a 250 MB efi partition for Manjaro whereas for Windows the efi partition is 100 MB - might be that somehow that brings problems with it
c) The Manjaro EFI partition is the 4. partition - maybe it matters…

I will try to solve the problem and come back with a solution - let me know if you have any other idea…

Many thanks.

Kind regards,
D.