If anyone is interested I thought I would pass this optimizer along. I normally don't use these things except for ONYX. but since it has great ratings and downloaded through the Apple app store, thought I would try it. Just another tool. https://itunes.apple.com/us/app/dr.cleaner-clean-disk-optimize/id921458519?mt=12 So far pretty slick, I got rid of 23 GB of unnecessary large files and junk. Pretty slick indeed. But as with anything,IMHO, backup your drive before and then after doing this big of a change.