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down grade to el capitan

  1. dadders6

    Going back to El Capitan, from H. Sierra...

    I have a mid 2011 iMac which was working fine, but slowing down a bit, so I preemptively had the HD replaced by an authorized Mac repair. He put High Sierra on it, but since then, the fans are blowing crazy (lots of folks are having this problem it seems) and I don't see any improvement over El...
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