Не может загрузиться в новое ядро

Я обновил свое ядро через apt-get, но моя Ubuntu 16.04 не загрузится в него. uname -r дает 4.8.0-36-generic. sudo update-grub дает

Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.8.0-36-generic
Found initrd image: /boot/initrd.img-4.8.0-36-generic
Found linux image: /boot/vmlinuz-4.4.0-98-generic
Found initrd image: /boot/initrd.img-4.4.0-98-generic
Found linux image: /boot/vmlinuz-4.4.0-97-generic
Found initrd image: /boot/initrd.img-4.4.0-97-generic
Adding boot menu entry for EFI firmware configuration
done

Но sudo apt-get upgrade дает

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  linux-gcp-tools-4.10.0-1007 linux-headers-4.10.0-37
  linux-headers-4.10.0-37-generic linux-headers-4.4.0-97
  linux-headers-4.4.0-97-generic linux-image-4.4.0-97-generic
  linux-image-extra-4.4.0-97-generic linux-signed-image-4.4.0-97-generic
  linux-tools-4.10.0-1007-gcp
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Более новые ядра, кажется, установлены, но личинка не находит его?

Какие-либо идеи?