Installing on a Singleboard Computer

[z3r01988]

Hello,

need some assistens installing Ubuntu Server.

Stating the USB driver with F7: UEFI: USB-Drive after that im getting:
error: file '/boot/' not found.
error: can't find command 'grub_platform'.

In GRUB Menu i choose install Ubuntu server, but it stuck on a massage: EFI stub: Loaded initrd from LINUX_EFI_INITRD_MEDIA_GUID device path
I see the USB-Drive blink 3 times and my System frezzes.

Tried with some Bootparameters: acpi=off, noapic, nolapic, pci=nomsi, i915.modeset=0
but all stuck at the same spot.

How to Debug the installation?

I can install Windows and boot it with no problems at all.

[MAFoElffen]

"Which" singleboard computer, with what architecture?

[z3r01988]

Can't really tell which CBS it is but its a i5-8365U so x64