The bootlog-OK.txt shows: [ 10.796728] Unable to handle kernel NULL pointer dereference at virtual address 00000000 when read which is not good at all. I also think you think you still not have set verbosity=7 in armbianEnv.txt, else the both the OK and NOK logs would show more and that is needed as a start for further investigation.

After inspecting the differences between those 2 bootlogs, it looks like it hangs up for some reason when trying to check the root filesystem for errors.

Hey Installed Armbian (Ubuntu-noble) with XFCE desktop on an HDD(sda) from SD-card, so I need to have an SD-card in my orange pi zero 2w. I wonder if I can move /boot to an another smaller SD-card? Or do I also need an "mbr" or someting also there u-boot are? /Cheers

Bootlog with non-working and working dtb file. bootlog-OK.txt bootlog-NOK.txt

I'm using armbian trixie/BSP 6.6.98 by @Nick A with thermal throttling disabled (`step_wise` policy) and with the performance governor (shouldn't matter that much).