You should always backup your data so you never lose any of your files. While you can always backup your files to a USB flash drive or a DVD, those solutions may not be able to store enough data, forcing you to copy your data to multiple devices or discs. For most people the simplest solution is to backup data using an external hard disk, plugged i...

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	www.macnn.com/articles/08/05/06/lacie.poulton.hard.disk/