How to uninstall OS X El Capitan from Mac and downgrade to YosemiteOfficially released on September 30, 2015, Mac OS X El Capitan focuses on performance and security improvements to deliver a more streamlined experience. With the generally positive feedback in place, this version of Appleās desktop operating system is being also widely discussed on forums in the context of application bugs, bad battery life, wireless and hardware functioning problems.
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How to uninstall OS X El Capitan from Mac and downgrade to Yosemite