Is your 4GB or 6GB iMac hard drive getting full with all your applications, documents and those hard drive swallowing mp3 files? Well don't despair, you can easily replace your hard drive with a larger one. This is both preferable and cheaper than buying an external USB hard drive. It isn't hard to do it yourself, it just takes patience and a little care and attention. The next page describes things you need to know before starting this upgrade like what kind of hard drive to buy, static prevention, partitioning etc.