I had an issue earlier this week that my hard drive would spas out as I booted it into Mac OS X. When I booted into Win 7 via bootcamp, everything was fine. I took it to the genius bar and told me I should back things up just in case, etc. So I went home and backed up, but I tried fixing the issue myself. I partitioned, erased and installed Mac OS X Snow Leopard onto my iMac via Target Disk Mode using my Macbook. It went all awesome, but.... When I booted my iMac, it would get stuck at the Grey Apple Logo. Fortunately though, I tried to boot it using Target Disk Mode and displayed perfectly on my macbook..so I don't know what's wrong with my iMac. Any help? Thanks!