when you click on the apple icon in the top left corner then "about this mac", my macbook pro doesnt have the startup disk displayed and all the pitures of this screen that i have seen do. the pictures show the processor, memory, startup disk, then more info, but mine skips startup disk and goes from memory to more info. im sure this isnt a problem but im super paranoid considering this is the most expensive thing ive ever owned and was just wondering the reason for this. thanks for any help