Cleaning up old vmlinuz and initrd files in /boot

 I noticed that updates were taking a long time on the kernel step. So I expanded what it was doing and it was attempting to build really old versions (3.13)

Purge from apt-get

• Figure out which package to remove
• dpkg -S /boot/vmlinuz-3.13.0-36-generic
• Remove the package
• sudo apt-get purge linux-image-3.13.0-36-generic
• If you have many to remove, you can use bash expansion like so:
• sudo apt-get purge linux-image-3.13.0-{36,37,39}-generic
• Regenerate initrd
• sudo update-initramfs -u -k all
• Update grub
• sudo update-grub
• If initramfs is still generating stuff for old kernel, you can remove like so
• sudo update-initramfs -d -k 3.13.0-36-generic
• Note: bash expansion does not work for this command

Sources

• https://askubuntu.com/questions/912473/can-i-delete-old-vmlinuz-in-boot-manually
• https://askubuntu.com/questions/1001285/why-are-old-initrd-files-of-uninstalled-kernels-filling-up-boot-partition