Order up a Retina MacBook Pro and you'll likely be confronted with a gravelly message about how the SSD is "built into the computer" and not user-upgradeable. As it turns out, that's not quite true -- so long as you're prepared to ignore a whole bunch of other warnings written inside the chassis itself, iFixit has shown how to remove the factory drive and now OWC has a new SSD to replace it with. The only downside is the cost: at $580,
