I just leveled up my computer fairy skills.

I installed virtualbox on my FreeBSD workstation, & not only did vboxdrv trigger kernel panic (page fault), so did vboxnet. Hello, stuck in reboot loop!

Figuring out `disable-module vboxdrv` in the boot menu was easy enough, but I couldn't boot past the early shell, & I couldn't fix anything bc `mount -o rw /` failed. Turns out, I use ZFS & needed `zfs set readonly=off zroot`.

Then, fix stuff, & success!