Hi, I'm new to the site, but not Macs. Although I have an ideal-just not sure how to go about it. I have my old 2007 Macbook that was dropped, there is just a few things I'd like to get out/off of it. I'm going to take out the hard drive and put it into a casing. But then what? How will I know if it's still good? I plan on doing this on my new Mac. I don't want to save/extract everything off the old hard hard drive. I've never used an external hard drive before-or backed up- (don't yell! I plan on doing that soon) Thanks in advance.