vkpurge

Old Void kernels are left on the boot partition. List them with:

vkpurge list

Remove one with:

vkpurge 2.8.2_4

Remove all but the latest with:

vkpurge rm all

Troubleshooting

Filled up your /boot? Try reconfiguring and installing the latest:

xbps-reconfigure -f linux5.2