So I have a late 2012 27" iMac. with a 3.4GHz i7, 8GB of ram, and a 2gb GTX 680. It is also the 1TB plus Fusion variation. Over the last two/three months I've begun to notice that my mac is becoming quite slow during regular browsing, music playing, etc. I thought this was odd since I am on the latest firmware. Any ideas? What is even stranger is that bootups from sleep mode/ restarts take exceptionally long despite (to my knowledge) the OS being on the SSD. Now I did use bootcamp at one point (since deleted and unpartitioned) so maybe that messed up the OS on the ssd? Any advice would be greatly appreciated! Edit: It seems that my SSD portion is empty? Is there anyway to to get the OS back on there/make sure the fusion software is doing its job (I.E. recognizing and moving my most used apps to the ssd)?