Can the OPI5 be Configured to Run LCNC?

Like tommylight said and I want to add that you should also check /boot/armbiEnv.txt for the same UUID. When you see a /boot mount in fstab you could remove that line too.

Here it didn't recognize the ID option by the way, in that case just leave that away, alternatively you could issue the blkid command to see the UUID.

first of all, thank you for your prompt answers.I can boot with kernel 6.1.75-vendor-rk35xx, with the 6.1.75-rt23 .debs installed, but without making the link (sudo ln -sf vmlinuz-6.1.75-rt23 Image). If I reboot and then make the link, it doesn't boot anymore. In /proc/cmdline I don't see any value for ubootpart=.

royka wrote:

... alternatively you could issue the blkid command to see the UUID.

I could not recall this to save my life when i was answering this!
Thank you for reminding me, now i will go on and forget it promptly!

I can read all the IDs in /drv/disks...., but I don't know how to enter it to recognize it.

rootdev=UUID= lotsofnumbershere
those lots of numbers have to be replaced by the ID of your drive

 The ID returned by blkid is the same that I have in armbianEnv and it is the same ID that it says it does not recognize when booting.