UEFI bios, problem installing freebsd but not pc-bsd

[John]

Hello -stable,

Got a new computer the other day. It has a UEFI bios. I downloaded the
latest builds of 10-stable and 11 from allbsd, and also downloaded
pc-bsd 10-R.

Although I could install all three, for the freebsds the system would
not get to the loader prompt. All I got was a blank screen and the
cursor hopping around in the top left quadrant of the screen.

In contrast to this, when I installed pc-bsd and the system rebooted, it
was able to fully boot as expected. Why is this? I suspect it's due to
UEFI but, unlike a server I look after, this machine does not appear to
have a legacy bios.

Now, while I have nothing against pc-bsd, I'm used to getting the base
install sorted then installing what I need out of ports, probably
because I'm an old fart who has been using freebsd as a desktop since
2.2.5. How can I make the proper BSD bootable after install in the face
of UEFI ? How does pc-bsd overcome this limitation?

[whoops, just looked at https://wiki.freebsd.org/UEFI - has anyone here
got this to work?]

thanks,
-- 
John