For the sole purpose of utilizing my Firewire 800 port, I bought a Western Digital external w/ a fw800 adapter. The speeds are great, but wtf is up with OS X not being able to boot when it's plugged in. This is utter retarded-ness. The grey screen w/ the Apple logo shows up and that's it. When the fw800 is unplugged, OS X boots fine. I am furious because given that Apple machines and firewire anything should be BFFs, everything should just work. Is there a fix?