I don't think the difference is "huge". I'm a professional programmer and even I'm surprised by the advertised space versus the usable space. I'd have guessed

I don't think the difference is "huge". I'm a professional programmer and even I'm surprised by the advertised space versus the usable space. I'd have guessed you'd have like 54GB or so free, not 23. I find marco to be a bit of a pro-Apple shill, eclipsed only by Gruber and Siegler, but he's right here, and I say that as someone who is often accused of being a Microsoft-shill by my more hardcore FOSS buddies.