The error message indicates that your boot partition isn't correctly mounted ("Error: missing /boot/firmware, did you forget to mount it?") and the attached Df.txt appears to indicate that /dev/mmcblk0p1 is mounted at /media/midian/boot instead of /boot/firmware.
Could you attach the content of /etc/fstab? It may provide some clue as to why the boot partition is winding up at the wrong mount-point. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1948591 Title: package flash-kernel 3.103ubuntu1~20.10.1 failed to install/upgrade: installed flash-kernel package post-installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/flash-kernel/+bug/1948591/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs