While attempting to upgrade Security Analytics running on a virtual machine from 8.3.1 to 8.4.1, the upgrade failed with a message about not having enough free space in /boot.
Virtual Machine running 8.3.1
The upgrade attempt to copy the ISO to the /boot/upgrade directory during the initial stages of the upgrade. On a virtual machine, the /boot partition is too small.
rm -rf /boot/upgrademkdir /mnt/upgrade_iso (If it says the File exists, then continue to the next step)