A 320-GB birthday: Installing a new hard drive in a MacBookThe best method for figuring out your hard drive storage needs is this: Whatever you have now, it’s not enough. And when you add more, that won’t be enough, either. When I bought my MacBook in January 2007, it came with a roomy, 160-gigabyte hard drive. I figured it would be quite some time before I felt constrained, but that time came sooner than I expected. Until Saturday, my MacBook had about 5
