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macOS - Wikipedia
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Identify your MacBook model - Apple Support
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:max_bytes(150000):strip_icc()/DefaultDesktopSierra-577e96125f9b5858751c6d42.jpg "The Minimum Requirements for Running macOS Sierra")
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iMac (Early 2009) | Low End Mac
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How to Install macOS Ventura or Monterey on Unsupported Macs, for Security Improvements - The Mac Security Blog
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The evolution of macOS (and Mac OS X) | Computerworld
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The Definitive Classic Mac Pro (2006-2012) Upgrade Guide
