Hi Everyone, I got a macbookpro (Os X Yosemite 10.10.5) few months ago and ever since have had weird things going on with the disk space. It has normally 120 gb. When I run "disk Inventory" or "disk drill", it says I'm using 60-70gb, but when I check "about this mac" or disk utility, I appear to have only about 20gb left. There's really quite little on the mac, so I don't understand it. Would anyone know why this could be/what could I do about it ? thanks a lot !