Cleanup failed linux kernel update

Question

Good evening!

SITUATION: I ran into a quite stupid problem, I know my LVM boot partition is not cleaning up properly old kernels and I have to do it manually, thus I forgot last time and now I am somehow stuck with a half-way installed linux-image-4.4.0-43. At first, I had the issue that when trying to update I had the message "not enough space" (something like that), so I followed the steps from THIS LINK. uname -r returns the current running kernel is 4.4.0-42 (fine) when is ran the dpkg -l command I get a slightly different list:

pi  linux-image-4.4.0-34-generic                4.4.0-34.53                                                 amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
ii  linux-image-4.4.0-36-generic                4.4.0-36.55                                                 amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
pF  linux-image-4.4.0-43-generic                4.4.0-43.63                                                 amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP

if I want to remove the last entry for the kernel 4.4.0-43 I always get unresolved dependencies (basically the 4.4.0-43-generic being dependent on the 4.4.0-43 packages)

PROBLEM: when I boot my PC now the booting stops and I have to press power button for few seconds and restart the machine, so I get into GRUB and can manually select the 4.4..0-42-generic kernel from the list the 43 kernel is the top entry in the list to select from in GRUB.

ASSUMPTION: my assumption is now that the new kernel is somewhat half way installed but not working properly. this is based on the output of the update-grub2 command:

Warnung: Werte ungleich 0 für »GRUB_TIMEOUT« werden, falls »GRUB_HIDDEN_TIMEOUT« aktiviert ist, nicht mehr unterstützt.
Linux-Abbild gefunden: /boot/vmlinuz-4.4.0-43-generic
Linux-Abbild gefunden: /boot/vmlinuz-4.4.0-42-generic
initrd-Abbild gefunden: /boot/initrd.img-4.4.0-42-generic
Linux-Abbild gefunden: /boot/vmlinuz-4.4.0-36-generic
initrd-Abbild gefunden: /boot/initrd.img-4.4.0-36-generic
Linux-Abbild gefunden: /boot/vmlinuz-4.4.0-34-generic
initrd-Abbild gefunden: /boot/initrd.img-4.4.0-34-generic
Adding boot menu entry for EFI firmware configuration

QUESTION: how do I fix this? I assume I have to remove somehow the new kernel entry and re-install it - but I am stuck/lost. I have read so many posts and links already, I am totally confused (not the biggest Linux pro - I guess you figured that already)

Any help is appreciated, thanks

UPDATE asked for: ls -alh /boot

drwxr-xr-x  5 root root 3,0K Okt 14 17:16 .
drwxr-xr-x 25 root root 4,0K Okt 14 17:16 ..
-rw-r--r--  1 root root 1,2M Jul 27 23:28 abi-4.4.0-34-generic
-rw-r--r--  1 root root 1,2M Aug 11 21:58 abi-4.4.0-36-generic
-rw-r--r--  1 root root 1,2M Okt  8 04:15 abi-4.4.0-42-generic
-rw-r--r--  1 root root 1,2M Okt 12 17:47 abi-4.4.0-43-generic
-rw-r--r--  1 root root 186K Jul 27 23:28 config-4.4.0-34-generic
-rw-r--r--  1 root root 186K Aug 11 21:58 config-4.4.0-36-generic
-rw-r--r--  1 root root 186K Okt  8 04:15 config-4.4.0-42-generic
-rw-r--r--  1 root root 186K Okt 12 17:47 config-4.4.0-43-generic
drwxr-xr-x  3 root root 4,0K Jan  1  1970 efi
drwxr-xr-x  5 root root 1,0K Okt 17 19:49 grub
-rw-r--r--  1 root root  35M Sep  1 18:55 initrd.img-4.4.0-34-generic
-rw-r--r--  1 root root  35M Sep 16 17:23 initrd.img-4.4.0-36-generic
-rw-r--r--  1 root root  37M Okt 13 18:38 initrd.img-4.4.0-42-generic
drwx------  2 root root  12K Apr 14  2016 lost+found
-rw-r--r--  1 root root 179K Jan 28  2016 memtest86+.bin
-rw-r--r--  1 root root 181K Jan 28  2016 memtest86+.elf
-rw-r--r--  1 root root 181K Jan 28  2016 memtest86+_multiboot.bin
-rw-------  1 root root 3,7M Jul 27 23:28 System.map-4.4.0-34-generic
-rw-------  1 root root 3,7M Aug 11 21:58 System.map-4.4.0-36-generic
-rw-------  1 root root 3,7M Okt  8 04:15 System.map-4.4.0-42-generic
-rw-------  1 root root 3,7M Okt 12 17:47 System.map-4.4.0-43-generic
-rw-------  1 root root 6,8M Jul 27 23:28 vmlinuz-4.4.0-34-generic
-rw-------  1 root root 6,8M Aug 11 21:58 vmlinuz-4.4.0-36-generic
-rw-------  1 root root 6,8M Sep  3 09:49 vmlinuz-4.4.0-36-generic.efi.signed
-rw-------  1 root root 6,8M Okt  8 04:15 vmlinuz-4.4.0-42-generic
-rw-------  1 root root 6,8M Okt 13 18:38 vmlinuz-4.4.0-42-generic.efi.signed
-rw-------  1 root root 6,8M Okt 12 17:47 vmlinuz-4.4.0-43-generic

df -hTa /boot

/dev/sdb2      ext2  237M    178M   47M   80% /boot

UPDATE2: the removal of 4.4.0-34-generic and 4.4.0-36-generic has worked, I guess. reinstall of 4.4.0-43-generic seems to be succesful from what I can understand.

Answer 1

Thanks a lot @Thomas.

the removal of the last two remaining linux images and in the last consequence the

apt-get install --reinstall linux-image-4.4.0-43-generic

solved the issue.