![]() boot from Partition 2 to defrag Partition 1. boot from Partition 1 to defrag Partition 2, Since you have two boot partitions on your HD, "To defragment your boot volume, you need to boot from a different volume" So, your original question about using iDefrag: They don't play in the same fields, nothing neither to do with defragmentation.ĭiskWarrior too has yet another approach: Directory handling. These too are small utilities to run quite harmless Terminal commands. (it's the "update_prebinding" command really, nothing to do with defragmentation). I find it misleading too, as all it optimizes is the launching of applications in Mac OS X In the more general usage of Mac OS X, defragmentation is actually counter-productive and defeats the very clever way Mac OS X has to rewrite every file on-the-fly onto the best possible locationĪt this very moment, each time an application uses it.īest location on the hard drive varies, depending on many more criteria than the simple contiguity.Ībout the term "optimization" in Apple software installs: Yes, in certain rare cases one might benefit from defragmenting HD and HD free space, but in Mac OS X it is not so black and white question. ![]() This quote from a MicroMat technician is misleading and makes me wonder about abusingly promoting defragmentation (and using their products) as so necessary. But defragmenting your drive can stave off some very flaky behavior, out of memory errors, and possibly even data loss.įile fragmentation (a file being broken up into chunks and strewn across your hard disk) automatically, and fairly well, every time that you launch a fragmented file under 20MB. There is often little in the way of performance to be gained by defragmenting your hard drive. But not for the reason that you might expect. I think theologians call that “invincible ignorance.” It is now a widespread form of the pollution of information space.Īctually, some Macs running OS X can benefit quite a bit from defragmenting their hard drive. ![]() It is an example of ignorance that is not able to be removed by any amount of evidence. The claim that installations of Mac OS X on HFS+ volumes do not fragment is a myth believed by people who do not have disk optimizers that allow them to see how much fragmentation their disks have. Here is a quote from a MicroMat technician, that I think is very insightful: "Maintenance Myth #4: Most folks with an opinion will probably tell you that Mac's running OS X never need to have their hard drives defragmented. Just to clear things up, this is the reason I purchased iDefrag: ![]()
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