I have a two month old 27" Mac running OS X 10.9. It has a 1.12 TB hard disk and I find I have only 115KB available. I have checked the useage of all the files in finder and they only ad up to approximate 300 GB. Is there another way to view the way the hard disc is used? I had a problem with multiple photos and trashed a couple of thousand, but I have emptied the trash can. Any suggestions would be appretiated.