I have iMac late 2012 1TB HDD and 16GB RAM. I only have like 300GB left. I want to know what is taking up all my space i use DaisyDisk amazing piece of software i found out like my User it take most of it up including my Photos folder. I have Folder of photos and Photo app. Do I need to keep the folder of photos which i have already imported into Photos app or can i just remove the folder and they will still be stored in Photos app. The problem is my Photos folder its only 54GB so that not much. I used to have Parallels with Windows 7 on it but i removed that which didn't make a difference either. Only apps i have is Adobe CS6 Master Suite, Twiiter, Facebook, and few video files but there are on an external Drive.