4 - Set the permission of the linux script if they are different, as precaution.
chmod 555 /etc/rc.d/linux
5 - Enable two services in rc.conf.
Open rc.conf with a text editor
ee /etc/rc.conf
then add if these are missing or set different:
linux_mounts_enable="YES"
linux_vulkan_enable="YES"
each entry on a single line, follow the formatting and do not change it.
Save the changes.
6 - Reboot