I open my qemu #NetBSD virtual machine on my laptop.
Three seconds later: OpenSUSE updates requests the installation of a new version of qemu. 
Let me sing you a song of my people, a song of the mighty tmux and his friend qemu.
I call this one: back to my #OpenBSD on qemu BS again.
@ParadeGrotesque@mastodon.sdf.orgSo, ERR M eroor on qemu is solved!
At least, I hope it is, I will have to wait for the first reboot.
Seems like the solution is simply to encrypt the disk with a pass phrase: the #OpenBSD bootloader then has no issues finding the disk and booting the system! 
DO NOT ASK ME WHY 
Oh yeah, that's the good stuff!
This is completely, cringy nerdy but it sparks joy in my cold geek heart.
