I have searched online and I have followed suggestions in Terminal, none of have worked for me. Below is issue I am having. Seems as though code to purge old kernels is broken, but to fix it I need to have more space, which is my entire purpose to begin with. I am very much new to Linux and am by no means a coder, so please be plain with me.
$ sudo apt autoremove Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: linux-image-extra-4.13.0-36-generic : Depends: linux-image-4.13.0-36-generic but it is not installed linux-image-generic-hwe-16.04 : Depends: linux-image-4.13.0-36-generic but it is not installed linux-signed-image-4.13.0-36-generic : Depends: linux-image-4.13.0-36-generic (= 4.13.0-36.40~16.04.1) but it is not installed E: Unmet dependencies. Try using -f. hunter@hunter-Satellite-C55-C:~$ apt-get -f install E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the administration directory (/var/lib/dpkg/), are you root? $ sudo apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages were automatically installed and are no longer required: libllvm4.0 linux-headers-4.10.0-35 linux-headers-4.10.0-35-generic linux-headers-4.10.0-37 linux-headers-4.10.0-37-generic linux-headers-4.10.0-40 linux-headers-4.10.0-40-generic linux-headers-4.10.0-42 linux-headers-4.10.0-42-generic linux-headers-4.13.0-26 linux-headers-4.13.0-26-generic linux-image-4.10.0-35-generic linux-image-4.10.0-37-generic linux-image-4.10.0-40-generic linux-image-4.10.0-42-generic linux-image-4.13.0-26-generic linux-image-extra-4.10.0-35-generic linux-image-extra-4.10.0-37-generic linux-image-extra-4.10.0-40-generic linux-image-extra-4.10.0-42-generic linux-image-extra-4.13.0-26-generic linux-signed-image-4.10.0-35-generic linux-signed-image-4.10.0-37-generic linux-signed-image-4.10.0-40-generic linux-signed-image-4.10.0-42-generic linux-signed-image-4.13.0-26-generic Use 'sudo apt autoremove' to remove them. The following additional packages will be installed: linux-image-4.13.0-36-generic Suggested packages: fdutils linux-tools The following NEW packages will be installed: linux-image-4.13.0-36-generic 0 upgraded, 1 newly installed, 0 to remove and 110 not upgraded. 78 not fully installed or removed. Need to get 0 B/21.0 MB of archives. After this operation, 72.6 MB of additional disk space will be used. Do you want to continue? [Y/n] y (Reading database ... 452182 files and directories currently installed.) Preparing to unpack .../linux-image-4.13.0-36-generic_4.13.0-36.40~16.04.1_amd64.deb ... Examining /etc/kernel/preinst.d/ run-parts: executing /etc/kernel/preinst.d/intel-microcode 4.13.0-36-generic /boot/vmlinuz-4.13.0-36-generic Done. Unpacking linux-image-4.13.0-36-generic (4.13.0-36.40~16.04.1) ... dpkg: error processing archive /var/cache/apt/archives/linux-image-4.13.0-36-generic_4.13.0-36.40~16.04.1_amd64.deb (--unpack): cannot copy extracted data for './boot/System.map-4.13.0-36-generic' to '/boot/System.map-4.13.0-36-generic.dpkg-new': failed to write (No space left on device) No apport report written because the error message indicates a disk full error dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 4.13.0-36-generic /boot/vmlinuz-4.13.0-36-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 4.13.0-36-generic /boot/vmlinuz-4.13.0-36-generic Errors were encountered while processing: /var/cache/apt/archives/linux-image-4.13.0-36- generic_4.13.0-36.40~16.04.1_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)