I have 4 kernels in /boot, leaving on 20MB which is not enough for the next one. I had installonly_limit= set at 5, as there were some kernel problems. After I got the error that there was not enough room for another kernel, I set installonly_limit= to 3 and did the update with --exclude=kernel* That worked to update everything else, but not remove the oldest kernel. How can I remove the oldest kernel to make room for the new one? thanks