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I use a variety of hard drives from different manufacturers and the SMART data labelling seems to change between manufactures. Some call it power cycles and some the number of power on's or even boot or load count When talking about MTBF "Mean time between failures" for normal mechanical hard drives there are a few areas that you should look at. Power on ...


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Trim kext is altered in Yosemite. This is not relevant if you're using an Apple installed SSD. If you're using a DIY SSD, Trim support is tricky in Yosemite because of recent modifications to kext security management that affects Trim support. More about Trim Enabler for Mac. About Trim in Yosemite In OS X 10.10 (Yosemite), Apple has introduced a ...


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Open a Terminal session. If you have a 6490M (open System Information and look under Graphics/Displays): mkdir ~/DisabledExtensions cd /System/Library/Extensions sudo mv ATIRadeonX3000.kext ~/DisabledExtensions sudo touch /System/Library/Extensions If you have a 6750M: mkdir ~/DisabledExtensions cd /System/Library/Extensions sudo mv ...



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