Installing new versions of macOS on a Mac should be a pretty simple exercise. The Mac tells you there’s an update available via a pop-up in Notification Centre – in some cases (depending on your settings) it’s even downloaded it already and just needs your go-ahead to install. However, sometimes when you click Go on an update things go a bit pear-shaped. In this tutorial we’ll look at what to do if your Mac stalls or freezes during an
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