Hey, My friend recently acquired a MBP off his flat mate with windows 7 installed on it, He tried to boot a snow leopard cd through the boot up screen then holding c onto the MBP but it failed to install. So now he cant even allocate where he wants to install it and because it failed it doesnt even load windows it just appears with system error after he boots the laptop 1) So I was wondering what your advice would be to do? I thought about doing a full system wipe, then I heard you could reinstall it via connecting it to another Mac or imac in our case then reinstalling it via the imac and selecting the MBP hard drive to install it into? 2) Is this possible? 3) Also the flat mate lost the gray cds that macs come with, so would the snow leopard be ok? Or is it just a system update not a full OS?