How to Delete Old Kernels in Ubuntu February 6, 2010
Posted by admin in : Internet Tips, Others , trackback
Every time there is update to the kernel, then the new kernel will be installed while the old kernel does not automatically deleted (uninstalled), so we’ll see a list of old kernels that is long enough in the grub menu at start.
If we do not have a problem with the new kernel is installed so we can remove the kernels long. But also needs to retain at least one old kernel in case the new kernel if future problems.
There are two ways that can be done to remove the old kernels in Ubuntu :
First way
1. Discover all the packages related to the kernel that is installed on the system. The command is:
jafar@k4tz:~$ dpkg -l / grep linux
or
jafar@k4tz:~$ dpkg –get-selections / grep linux
2. Clear all linux-headers-*, linux-image-* or something like the kernel does not want us to save. Example command:
jafar@k4tz:~$ sudo aptitude –purge remove linux-headers-2.6.31-14-generic linux-image-2.6.31-14-generic linux-restricted-modules-2.6.31-14-generic linux-backports-modules-2.6.31-14-generic
3. Then wipe again from the package configuration and obsolescence that may still remain our alias net-clean system. The command:
jafar@k4tz:~$ sudo deborphan | xargs sudo apt-get -y remove –purge && sudo deborphan –guess-data | xargs sudo apt-get -y remove –purge; sudo apt-get autoremove && sudo aptitude purge ‘~c’; sudo apt-get autoclean
Second way
1. To see the linux headers, images, and the unused modules use the following command:
jafar@k4tz:~$ dpkg -l ‘linux-*’ | sed ‘/^ii/!d;/’”$(uname -r | sed “s/\(.*\)-\([^0-9]\+\)/\1/”)”‘/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d’
2. Then cleaned by using the following command:
jafar@k4tz:~$ sudo dpkg -l ‘linux-*’ | sed ‘/^ii/!d;/’”$(uname -r | sed “s/\(.*\)-\([^0-9]\+\)/\1/”)”‘/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d’ | xargs sudo apt-get -y purge
Reference:
Description:
- The second is more easy and practical to do if we do not really understand where all you need to be removed
- Be careful to remove it, if not sure then you should not need to be removed
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[...] Originally Posted by Yondaime Thanks, I was to ask a question relating the kernel installation, in an update Ubuntu installed a new kernel now when I boot i have two kernels with diff. ver. obviously ! was about to ask if I can/should remove the older one. Here: How to Delete Old Kernels in Ubuntu | ICT Learning [...]