I'm 90% sure this will work but I'm just double checking my slight doubt. I currently have a 15" Unibody Macbook Pro with a 500GB (running OS 10.5.6) hard drive. I have a 17" Unibody Macbook Pro on order. When I receive the 17 can I just put the 15" hard drive in the 17" and will it boot up just fine without any errors or OS issues. I know this might seem obvious but i'm just making sure.