Hello, I’ve been using a Pi3b for a while. The last time I tried to run a core update it seemed to work OK but then wouldn’t boot up, I think it was from 190 to 191. Since I was offline I just reinstalled 190 and restored my backup to get back online.
I’ve now looked at updating again since it’s getting seriously out of date; I took the precaution of cloning my sd card to a spare first then updated from 190 to 193. Everything looked fine as before until the reboot - nothing happens. I’ve got a serial console cable connected and I’m seeing nothing. Putting the spare card in, it boots up normally to 190. I’ve got the failed card in a reader here, is there something I can look at in the logs to see where it went wrong?
Hello,
I’m not sure exactly what you would need to look for, but you could look at ‘/var/log/bootlog’ and ‘/var/log/messages’ to see if anything stands out for the failed boot.
Have you tried plugging a monitor into the HDMI port on the Pi? There may be some useful information there from u-boot that you wouldn’t see on a serial console or in the logs.
Regards,
Stephen
Right, I’ve had time do look at this more closely. I’ve mounted the SD card on my laptop and disabled the serial console so I can try and boot up with a monitor and keyboard connected, but you get nothing, just the rainbow splash screen. I’ve tried a clean install of version 190 on a spare SD card and even in a spare Pi, the update runs through and looks OK but it won’t come back up after reboot. Since I had the problem version 194 has been released, going to that instead of 193 is the same.
Out of interest I tried flashing 193 to the Pi, connecting it to the internet and updating to 194 and it works fine. So I have no idea what is broken by the upgrade from 190, and also from 189 if I remember correctly. I think I will keep a clone of my setup on a spare SD card for future updates, but having to do a clean install and restoring a backup is a bit of a pain.