I have just had to replace the hard disk of my MacBook Pro, which was previously running Sierra. It's quite a high spec, if a few years old. I was very happy that the computer automatically downloaded an OS and installed it onto the new disk.
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The computer downloaded Lion (10.7.5), and the Sierra upgrade is dangled in front of me on the App store, but when I click 'get', it says it requires a minimum of 10.8. There appears to be no way to restore my computer to Sierra! There are some links in the App Store for upgrading Lion to intermediate OS's - but following the links leads to empty pages.
How To Upgrade Mac Lion To Sierra
Mac Os Lion To Sierra
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I have a MacBook Air running Mac OS X Lion 10.7.5. I wish to upgrade it to macOS Sierra, but it requires at-least OS X Mountain Lion 10.8 which is not available anymore in the App Store. I don't know why, but sometimes you have to force the Mac App Store to load things by following a specific link in Safari. Themes for ibooks author 4 6. Once you have El Capitan, High Sierra should be available in the Mac App Store. If not, you can follow this link: macOS High Sierra on the Mac App Store.
