I have a 27" iMac. A few days ago, windows started doing scandisk every time I booted. No biggie I thought, and I went and disabled scandisk. I also found in Mac OS, that programs would randomly freeze. Still, I thought nothing of it. Now my iMac won't boot, and it can't fix the drive. Should I bother to try to reinstall, or is my harddrive dead? To think I was just unlucky when my Macbook failed. Seems my iMac is a lemon too. If it helps, Windows works but I have experienced freezing in the past etc.