If you’ve been using and updating Ubuntu for sometime now, you may have old kernels installed on your system that are not useful anymore.

Using Ubuntu Tweak, this brief tutorial is going to show you how to remove those old kernels from Ubuntu 12.04 / 12.10 easily with few clicks. If these unused kernels are not removed, they may just end of using valuable space on your system’s disks.


  • Install Ubuntu Tweak
  • Clean up your system
  • Enjoy!


To get started, press Ctrl – Alt – T on your keyboard to open the terminal. When it opens, run the commands below to add Ubuntu Tweak PPA

sudo add-apt-repository ppa:tualatrix/ppa


Next, run the commands below to update your system and install Ubuntu Tweak!

sudo apt-get update && sudo apt-get install ubuntu-tweak


After installing, go to Dash and open Ubuntu Tweak




When it opens, select ‘Janitor’ tab and select ‘Old Kernel’ and remove all.




Notice the amount of space you can save?