Just wondering if theres is a reputable source of info on the max size hard-drive I can put in a MBP either the older version or the newer unibody model. Right now I'm contemplating installing a dualdrive in one of my systems. More info on those cam be found at the 2 links posted below. original MBP http://www.powerbookmedic.com/DualDrive---Add-a-Second-Hard-Drive-to-your-Laptop-p-17316.html unibody http://www.powerbookmedic.com/DualDrive-500GB----Add-a-Second-Hard-Drive-to-your-Laptop-p-17257.html I'm going to assume their #'s are correct on the dualdrives but dont see why any 2.5" sata would pose a problem. Seems with the older MBP I can install a 1tb dualdrive but does the stock internal max's out at 500gb? or could I go with 2x 1tb drives? While with the newer unibody the stock internal drive max's out at 750gb and the dual drive can only be 500gb. More than likely I will be modding my older MBP just because it can support the most storage space. Was just wondering if those #'s are right or if it matters I dont see why a 500gb drive would be any different than a 750gb or 1tb as they are all 2.5" sata just bigger size drives.