Remove Old Kernels of Debian/Ubuntu Rumi, April 1, 2022 To find out the current version of Linux kernel running on your system, use the following command. $ uname -sr Linux 4.12.0-041200-generic To list all installed kernels on your system, issue this command. $ dpkg -l | grep linux-image | awk '{print$2}' linux-image-4.12.0-041200-generic linux-image-4.8.0-22-generic linux-image-extra-4.8.0-22-generic linux-image-generic Remove Old Unused Kernels on Debian and Ubuntu Run the commands below to remove a particular linux-image along with its configuration files, then update grub2 configuration, and lastly reboot the system. $ sudo apt remove --purge linux-image-4.4.0-21-generic $ sudo update-grub2 $ sudo reboot Removing Old Kernel in Ubuntu [sudo] password for tecmint: Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: linux-generic linux-headers-4.8.0-59 linux-headers-4.8.0-59-generic linux-headers-generic linux-image-4.8.0-59-generic linux-image-extra-4.8.0-59-generic linux-image-generic Suggested packages: fdutils linux-doc-4.8.0 | linux-source-4.8.0 linux-tools Recommended packages: thermald The following packages will be REMOVED: linux-image-4.8.0-22-generic* linux-image-extra-4.8.0-22-generic* The following NEW packages will be installed: linux-headers-4.8.0-59 linux-headers-4.8.0-59-generic linux-image-4.8.0-59-generic linux-image-extra-4.8.0-59-generic The following packages will be upgraded: linux-generic linux-headers-generic linux-image-generic 3 upgraded, 4 newly installed, 2 to remove and 182 not upgraded. Need to get 72.0 MB of archives. After this operation, 81.7 MB of additional disk space will be used. Do you want to continue? [Y/n] y Get:1 http://us.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 linux-headers-4.8.0-59 all 4.8.0-59.64 [10.2 MB] Get:2 http://us.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 linux-headers-4.8.0-59-generic amd64 4.8.0-59.64 [811 kB] Get:3 http://us.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 linux-generic amd64 4.8.0.59.72 [1,782 B] Get:4 http://us.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 linux-headers-generic amd64 4.8.0.59.72 [2,320 B] Get:5 http://us.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 linux-image-4.8.0-59-generic amd64 4.8.0-59.64 [23.6 MB] Get:6 http://us.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 linux-image-extra-4.8.0-59-generic amd64 4.8.0-59.64 [37.4 MB] Get:7 http://us.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 linux-image-generic amd64 4.8.0.59.72 [2,348 B] Fetched 72.0 MB in 7min 12s (167 kB/s) Selecting previously unselected package linux-headers-4.8.0-59. (Reading database ... 104895 files and directories currently installed.) Preparing to unpack .../0-linux-headers-4.8.0-59_4.8.0-59.64_all.deb ... Unpacking linux-headers-4.8.0-59 (4.8.0-59.64) ... Selecting previously unselected package linux-headers-4.8.0-59-generic. Preparing to unpack .../1-linux-headers-4.8.0-59-generic_4.8.0-59.64_amd64.deb ... Unpacking linux-headers-4.8.0-59-generic (4.8.0-59.64) ... Preparing to unpack .../2-linux-generic_4.8.0.59.72_amd64.deb ... Unpacking linux-generic (4.8.0.59.72) over (4.8.0.22.31) ... Preparing to unpack .../3-linux-headers-generic_4.8.0.59.72_amd64.deb ... Unpacking linux-headers-generic (4.8.0.59.72) over (4.8.0.22.31) ... Selecting previously unselected package linux-image-4.8.0-59-generic. Preparing to unpack .../4-linux-image-4.8.0-59-generic_4.8.0-59.64_amd64.deb ... Done. Removing linux-image-4.8.0-22-generic (4.8.0-22.24) ... Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 4.8.0-22-generic /boot/vmlinuz-4.8.0-22-generic update-initramfs: Deleting /boot/initrd.img-4.8.0-22-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 4.8.0-22-generic /boot/vmlinuz-4.8.0-22-generic Generating grub configuration file ... Found linux image: /boot/vmlinuz-4.12.0-041200-generic Found initrd image: /boot/initrd.img-4.12.0-041200-generic Found linux image: /boot/vmlinuz-4.8.0-59-generic done ... Src: https://www.tecmint.com/remove-old-kernel-in-debian-and-ubuntu/ Administrations Configurations (Linux) DebianUbuntu