So yesterday I attempted to install Windows 7 HP since I got a cheap plug in CD-Rom drive from Best Buy. Long story short, Windows wouldn't install on the partition Mac OS X made. I kept getting some GPT error I believe. I tired to format it, like I did on my 2010 MBP, but nothing worked. Due to my stupidity, I actually formatted the Mac (160GB) partition. My mac wouldn't boot obviously. I got into disk utility and then somehow managed to combine 900GB+160GB (which I'm assuming was the SSD portion of the hard drive). I restored everything from Time Machine, but now my hard drive capacity is like 1.11TB in size, whereas before it was only 968GB. Did I screw up my fusion drive? This iMac is fully covered under warranty? For what its worth, the apps boot up exactly like before. I did understand the fusion concept as the OS and apps install on the fusion drive, whereas everything else goes to the larger drive.