I'm running Snow Leopard v10.6.8 on a Mac Book Pro 13" that I received for Christmas last year. Everything is fine with this computer but a couple weeks ago I went to open Disk utility because I ...

Apple has an app called Disk Utility preinstalled on all Macs. Open Disk Utility and you can select the external drive from a list of connected volumes and there is a Disk First Aid option to run a ...