install/57542: NetBSD shuts down during installation on Intel Atom Baytrail Notebook with 32-bit EFI

[lehmannwer%gmail.com@localhost]

>Number:         57542
>Category:       install
>Synopsis:       NetBSD shuts down during installation on Intel Atom Baytrail Notebook with 32-bit EFI
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 26 13:10:00 +0000 2023
>Originator:     Werner Lehmann
>Release:        9.3 and 10-beta
>Organization:
>Environment:
Not possible
>Description:
I recently learned about the announcement of NetBSD 10 beta, so I was happy to try it out immediately. Here is the problem: I have some "fancy" and exotic old Notebook (Airis Exelsis 140) (https://www.abueloinformatico.es/verproductos.php?id=5511) which comes with an Intel Atom Baytrail processor, a 32-bit EFI and an InsydeH20 Setup Utility which has no possibility of setting legacy BIOS mode. That being said, it is clear that there are not many operating systems capable of installing on a 64-bit Processor but with 32-bit EFI only. But NetBSD, since version 9.3 (I think), is one of them, which makes it appealing. Although the EFI recognizes the 9.3 and the 10-beta installation media and the thing seems to boot fine, after a while (either you can just wait or you get more or less to the point where you can partition your disk), the system suddenly performs what seems to be a clean shutdown.
The Notebook is not broken, it ran Windows 10 at the time and right now I have Fedora 38 running on it, only thing I have no sound. So obviously it is NetBSD that has some kind of problem with that hardware.
>How-To-Repeat:
Create a NetBSD 9.3 or 10 beta amd64 bit install img, plug into a machine with Intel Atom Baytrail CPU (Z3735F), boot from installation medium and try to perform the installation.
>Fix: