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You can do that even you already have the macOS installed. Go to App Store and Download macOS Sierra.You can create a bootable USB drive with macOS Sierra on it following these steps: Also make sure you have a working memory stick with 8GB or more on it. It's up to you what OS installation to proceed with, but as long as your hardware supports the newest OS version I would go with clean install of Sierra.īefore proceeding further make sure you have your data backup somewhere, preferably using Time Machine.
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You can still get the OS X El Capitan via this link - thanks to for pointing out. Mac models are compatible with macOS Sierra: Of your screen, choose About This Mac, then choose More Info. Your iMac late 2010 is compatible with Sierra according to the official MacOS Sierra - Technical Specifications page.įor details about your Mac model, click the Apple icon at the top left
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