Comment 5 for bug 1460396

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Tyler Dinsmoor (pappad) wrote : Re: Old kernels filling up /boot, causing failed updates

The reasons to why old kernels are not intentionally being marked for autoremoval (as of 2008-11-04) is because it was considered too dangerous and apt has an exception to not tag linux-image-* packages for autoremoval because we had no idea which kernels actually worked for a system.

However, I had thought that this problem had been addressed using last-good-boot for grub after runlevel 2 was reached, here:

https://wiki.ubuntu.com/KernelTeam/removing-old-kernels

But since the wiki hasn't been updated since '08, maybe that is not true anymore.