I have a 256GB SSD for startup and applications and a 1TB HD for all my documents, music, etc. I have <700MB available to me now. I recently began editing a video in Final Cut and so "imported Media" of about 70GB and I saw it was using that on my SSD, "Macintosh HD". Why? What is it that's using so much space? I have almost no extra Apps installed: What Can I do? When I imported the media into Final Cut I "copied" the files which I assume is what sucked up so much space this last time. But in reality, I should have over 100GB available. wtf? please help!!! Can provide screenshots as needed. I really need to fix this, my computer is running so slow.