Installed OpenBSD. Can't boot it yet!

This will be something for me to fool about with when I have time from other things. Installing it was quite tricky as the installation CD only boots in legacy mode. I had to enable legacy, do the install and then switch back again. The first time, I wasn't fast enough but I still got elilo and then Slackware. I must say I'm puzzled because surely elilo shouldn't have been running in that mode. And Slack behaved very oddly, coming up with glacial slowness and not letting me log in at console 1 (but console 2 worked). Now we're back to normal, booting from refind.

I have made a refind entry for BSD following some instructions which I found online, but so far it doesn't go to completion. And when I mount the BSD partition in Linux, I can see bin and sbin but nothing in usr at all. I wonder how long it will take me to get it all working.