Csdrhrt

So I'm manually deleting old kernels and did a dpkg --list 'linux-image-*' and I get:

Desired=Unknown/Install/Remove/Purge/Hold

| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend

|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)

||/ Name           Version      Architecture Description

+++-==============-============-============-=================================

ii  linux-image-4. 4.10.0-42.46 amd64        Linux kernel image for version 4.

ii  linux-image-4. 4.13.0-31.34 amd64        Linux kernel image for version 4.

ii  linux-image-4. 4.15.0-38.41 amd64        Signed kernel image generic

ii  linux-image-4. 4.15.0-39.42 amd64        Signed kernel image generic

ii  linux-image-4. 4.15.0-42.45 amd64        Signed kernel image generic

ii  linux-image-4. 4.4.0-128.15 amd64        Linux kernel image for version 4.

ii  linux-image-4. 4.4.0-140.16 amd64        Linux kernel image for version 4.

ii  linux-image-ex 4.4.0-128.15 amd64        Linux kernel extra modules for ve

ii  linux-image-ex 4.4.0-140.16 amd64        Linux kernel extra modules for ve

ii  linux-image-ge 4.4.0.140.14 amd64        Generic Linux kernel image

ii  linux-image-ge 4.15.0.42.63 amd64        Generic Linux kernel image

un  linux-image-un <none>       <none>       (no description available)

un  linux-image-un <none>       <none>       (no description available)

un  linux-image-un <none>       <none>       (no description available)

So I dug a little deeper and found that dpkg-query --show 'linux-image-*' doesn't help me much:

linux-image-4.10.0-42-generic   4.10.0-42.46~16.04.1

linux-image-4.13.0-31-generic   4.13.0-31.34~16.04.1

linux-image-4.15.0-38-generic   4.15.0-38.41~16.04.1

linux-image-4.15.0-39-generic   4.15.0-39.42~16.04.1

linux-image-4.15.0-42-generic   4.15.0-42.45~16.04.1

linux-image-4.4.0-128-generic   4.4.0-128.154

linux-image-4.4.0-140-generic   4.4.0-140.166

linux-image-extra-4.4.0-128-generic 4.4.0-128.154

linux-image-extra-4.4.0-140-generic 4.4.0-140.166

linux-image-generic             4.4.0.140.146

linux-image-generic-hwe-16.04   4.15.0.42.63

linux-image-unsigned-4.15.0-38-generic

linux-image-unsigned-4.15.0-39-generic

linux-image-unsigned-4.15.0-42-generic

So where are those 3 coming from and how do I get rid of those 3??

Additional info:

dpkg --list 'linux-image-*' > /tmp/N0rbert.txt is here.

uname -r and ls /boot are here

Before proceeding, compare the output of uname -r (your current running kernel version) with these versions. If you see the same number, then those are not old kernels, but unsigned new kernels so don't delete them!

Otherwise you can delete them using simply:

sudo apt-get purge linux-image-unsigned-4.15.0-38-generic 

linux-image-unsigned-4.15.0-39-generic linux-image-unsigned-4.15.0-42-generic

These kernels came from the official repositories:

• 
  linux-image-unsigned-4.15.0-38-generic,


• 
  linux-image-unsigned-4.15.0-39-generic,


• 
  linux-image-unsigned-4.15.0-42-generic.

My personal methods of removing kernels is one of the following:

• 
  

  use apt-get autoremove

  
  
  

  sudo apt-get autoremove
  
  

  
  


• 
  

  use purge-old-kernels from byobu package:

  
  
  

  sudo purge-old-kernels
  
  

  
  


• 
  

  remove non-installed kernels manually (if previous methods fail):

  
  
  

  sudo apt-get purge $(dpkg -l | grep 'linux-image-' | grep -v "^ii" | awk '{print $2}')
  
  

  
  

Note: dpkg --list may truncate its output when the terminal is narrow, so consider to use a redirect to file with dpkg --list 'linux-image-*' > d.txt and then less d.txt