Won't boot after upgrade from 6.9.3 to 6.1

[ingarb]

Hi! Tried to update Unraid today to the latest version and clicked reboot when it asked me to.

 

Now when it tries to boot, it shows this error (see screenshot).

 

Any quicktips? Thank you.

[itimpi]

That tends to indicate a problem reading a file off the flash drive.    You might want to try following the procedure here to see if it helps.

[Joedy]

how manu usb devices do you have plugged in?

[ingarb]

5 hours ago, Joedy said:

how manu usb devices do you have plugged in?

Hi.

 

Just keyboard dongle and the USB-stick with Unraid. Nothing else.

[ingarb]

22 hours ago, itimpi said:

That tends to indicate a problem reading a file off the flash drive.    You might want to try following the procedure here to see if it helps.

THanks @itimpi! Replaced the bz files like in the guide you posted and Unraid back up running again.

 

Thanks again.

[ingarb]

Only disappointment here, is that the Unraid upgrade process wrote to the USB stick and did not verify checksum of the new OS files after writing... Because they were totally borked.