Ok,
I run this test:
Power on my box.
I choose 'boot in single mode'.
FreeBSD boots and shows: Enter full pathname of shell... then I press ENTER and get shell as root.
I run mount, and get:
/dev/ada0s2a on / (ufs, local, noatime, read-only)
devfs on /dev (devfs, local, multilabel)
Then, I...