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<blockquote data-quote="bobtomay" data-source="post: 1028030" data-attributes="member: 24160">You can download iDefrag.&nbsp; The download version will give you a report of the fragmentation of your drive.&nbsp; I have yet to see above 0.5% the few times I've checked.OS X keeps your files in good shape.&nbsp; What it doesn't do is maintain contiguous free space like you would be use to seeing with the better windows defraggers.&nbsp; For those with close to a full drive and do a lot of storing then deleting of very large files (GB or larger), then a defrag might come in handy.&nbsp; The downside to iDefrag, is that to defrag the drive, you have to do it from a separate startup disc and leave it to run all night - it takes hours.&nbsp; To me, if you are in the small percentage that a defrag would pay off, think I'd just use SD! or CCC and reclone back to your internal drive which would basically do it for you in a fraction of the time.The vast majority of users, especially those like myself that maintain that 25-30% free space minimum should never need to do it.</blockquote>

[QUOTE="bobtomay, post: 1028030, member: 24160"] You can download iDefrag. The download version will give you a report of the fragmentation of your drive. I have yet to see above 0.5% the few times I've checked. OS X keeps your files in good shape. What it doesn't do is maintain contiguous free space like you would be use to seeing with the better windows defraggers. For those with close to a full drive and do a lot of storing then deleting of very large files (GB or larger), then a defrag might come in handy. The downside to iDefrag, is that to defrag the drive, you have to do it from a separate startup disc and leave it to run all night - it takes hours. To me, if you are in the small percentage that a defrag would pay off, think I'd just use SD! or CCC and reclone back to your internal drive which would basically do it for you in a fraction of the time. The vast majority of users, especially those like myself that maintain that 25-30% free space minimum should never need to do it. [/QUOTE]

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