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Apple Computing Products:
macOS - Operating System
defrag the hdd
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<blockquote data-quote="djames42" data-source="post: 347217" data-attributes="member: 13241"><p>My understanding is that it has to do with the way the Mac writes to a journaled filesystem. However, your drive needs to have a fair bit of free space available for this to work properly (I believe the magic number is 25% of your partition has to be kept free).</p><p></p><p>Also, while OS/X (and any modern Unix-based operating system) will keep your <em>files</em> as fragment-free as possible, the operating system will not <em>optimize</em> your drive. For that you'll need a tool such as Tech Tool Pro (although iDefrag may also support optimization).</p></blockquote><p></p>
[QUOTE="djames42, post: 347217, member: 13241"] My understanding is that it has to do with the way the Mac writes to a journaled filesystem. However, your drive needs to have a fair bit of free space available for this to work properly (I believe the magic number is 25% of your partition has to be kept free). Also, while OS/X (and any modern Unix-based operating system) will keep your [i]files[/i] as fragment-free as possible, the operating system will not [i]optimize[/i] your drive. For that you'll need a tool such as Tech Tool Pro (although iDefrag may also support optimization). [/QUOTE]
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Apple Computing Products:
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defrag the hdd
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