macOS compatibility: What macOS versions can my Mac run? | Macworld
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Replace your 2009-2012 MacBook Pro HD with an SSD
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macos - Mac Pro 4,1 (Early 2009) Sierra Compatibility? - Ask Different
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2009 MacBook in 2023, But Everything Works (with El Capitan) - YouTube
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Mac OS X Netbook Compatibility Chart | Edible Apple
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How to Install macOS Sonoma on Unsupported Macs, for Security Improvements - The Mac Security Blog
macOS compatibility: What macOS versions can my Mac run? | Macworld
MacOS High Sierra Compatible Macs List | OSXDaily
Identify your MacBook Pro model - Apple Support
OpenCore Legacy Patcher
Identify your MacBook Air model - Apple Support (CA)
