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#11
Windows 7 has a very good built in defrager. I can't understand why one wouldn't defrag. I can't hurt only help. The more often you defrag the less time it takes. With today's large hard drives it could take a long time if put off for a long time. It speeds things up because your hard drive spends a lot less time spinning looking for things. That means to me a hard drive should last longer because of spinning less.