Sorry to be back here    I run a Cubox-i. I upgraded to kernel 5.1.16 yesterday. Then I rebooted and everything was running fine.   But today my server looked dead: none of my services was answering, no way to ssh to the cubox... I tryied a hard reboot with no success. Here is the log on a putty console:   U-Boot SPL 2013.10-rc4-ge4bc4c3 (Dec 18 2014 - 14:55:42) Boot Device: SD1 spl: error reading image u-boot.img, err - -1 Load image from RAW...