Upgrading hard disk drive.

Yes, but I would not use a Blue model. Stick to their Black models which are more reliable in Macs. The laptops support only one drive unless you remove the optical drive and replace it using something like the Data Doubler from OWC.

if the drive is ment for notebooks then lion will work. if u want 2 hdd then buy a drive frame from macsales. they have all the instructions.