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macbook pro poor performance

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    Resolved Macbook Pro 2011 Super Slow because of HDD?

    I have this Macbook Pro from one of my friend. It's from early 2011 and it is running under Mac OS Sierra. I suspect that the hard drive is getting old and I ran a scan with a software called "DriveDx". It was saying that the HDD is running at 79% of its health performance and 6,953 hours Power...