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Similarly, if you installed High Sierra on a Mac with an SSD and wanted to revert to Sierra. Create a bootable installer as above. Press Option/Alt as you start up your Mac. How to Upgrade to High Sierra – Everything You Should Know Well, this sums up everything you should know about how to update macOS and especially High Sierra. We think we’ve made everything clear about upgrading to this refined version of macOS, bringing some worthier changes too. If you have any doubt, make sure that you let us know through your comments. Should I update to Mac Os Sierra from Mav… - Apple Community Question: Q: Should I update to Mac Os Sierra from Mavericks? So I have an Early 2013 Macbook Pro 13" with a 2.6GHz i5, 8gb Ram and 256gb ssd. I'm currently running 10.9.5 and it's really stable, however it's getting a bit out of date.
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macOS - How to Upgrade - Apple Make sure you’re ready to upgrade. Before you upgrade, we recommend that you back up your Mac. Then, if your Mac is running OS X Mountain Lion 10.8 or later, you can upgrade directly to macOS Mojave. How to upgrade to macOS Sierra - Apple Support If you have hardware or software that isn't compatible with macOS Sierra, you might be able to install the previous version, OS X El Capitan. macOS Sierra won't install on top of a later version of macOS, but you can erase your disk first or install on another disk. How to downgrade macOS from Mojave to an older version Similarly, if you installed High Sierra on a Mac with an SSD and wanted to revert to Sierra. Create a bootable installer as above. Press Option/Alt as you start up your Mac.
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