hi Guys, problem: yesterday i noticed my mac was having prolonged periods of spinning wheel. I thought i could fix it by repairing permissions and verifying disc. It came up with some errors but i can't remember for the life of me what they were. Anyhoo on reboot, i get the startup sound and immediately to a grey screen, nothing else. What i've tried: Taking out the battery and pressing power for 30secs pressing P R command and that other thing and letting it reboot 4-5 times Put in the DVD that came with macbook and booting from it by pressing c, nothing happened, same old grey screen (tried pressing D too) Similar to above but pressed option instead. I got far as seeing the cursor and nothing else. When i let go of option, the cursor frooze. what i think is up: I know its a problem with the harddrive. I put in an old one and it works flawlessly (and the DVD drive works with it too). Is there anyway to repair my harddrive? or any other way to boot from the DVD?