I got boot partition on a SD-card. I have attached a sata-hdd which is used for the rest of the operating system. I was upgrading from v. 5.20 (vanilla kernel)
I remember some warnings about that apt couldn't remove some files from a directory, because it was not empty, but I don't think, that this is the problem.
I'm using cryptsetup to decrypt the sata-hdd at boot time. (cryptroot in the boot.cmd file) (http://forum.armbian.com/index.php/topic/276-boot-sata-encrypted-disk/)
Any help will be higly appreciated. I don't have access to a serial console I got the banana pi pro attached to a hdmi display and an usb keyboard. Can I see the log on that display? Please provide steps then. Thanks.