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01/25/2017 790 views
Hard drive is 500 GB and running OS X is 10.11.5. It's painfully slow. I tested the drive with disk utility and it says no issues. RAM capacity is 4 GB.
Still the MacBook Air performance sucks. I think defragging the MacBook but how should I do it?
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Apple says you don't need to: https://support.apple.com/en-us/HT1375

I have seen poor performance with older spinning drives and OS 10.11 and higher. There isn't a lot that you can do about it, unfortunately. You can try repairing disk permissions, that might help. Otherwise the normal steps of reducing running processes is your best bet.
Answered 01/25/2017 by: chucksteel
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I thought the Mac book air uses a ssd?? So it doesn't require defraging - btw no sdd needs defraging because of the way they work. 

Cold nuke and rebuild. If you think it's the ssd, do a read write speed test, Crystal disk mark or something for Mac and compare it with other reports online - if you think it's a dodgy ssd.
Answered 01/25/2017 by: rileyz
Red Belt

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If you have an old Mac hard drive and you really want to defrag your Mac to reduce the fragments and improve the data access time, then there is a software for this. You can use Stellar Defrag Drive Software http://www.itninja.com/link/mac-drive-defrag-software which is a 3rd party application primarily used for defragmentation purpose. This software provides plenty of additional features along with defragmentation of Mac hard drive.
Answered 01/29/2017 by: peteosmac
Fourth Degree Green Belt