I just tried to update my 2008 Macbook from Leopard to Snow Leopard. Install went fine but all of the sudden I got an error message, accompanied bij a yellow triangle with a black exclamation mark telling me that the install has failed without any further info. I rebooted and Snow Leopard was trying to install again. I thought 'why not' and continued. Then, when I had to pick a disk to install on, my Macbook harddrive couldn't be found. I thought 'screw this I'll stick to Leopard' and rebooted. After that it just stuck on the grey screen with the Apple and the loading animation. I booted with command+v and this is the info I got: Any idea how I can fix this or at least save my files?