There is also the even trickier business of installing a clean copy of an older version of macOS on your Mac (Monterey, Big Sur, Catalina, High Sierra, Sierra, El Capitan, Mojave, Yosemite or an even old version of OS X). Not only are there three different methods (which we’ll run through below) the methods depend on the version of macOS that you are running. Use the Erase All Content and Settings option setting in System Preferences (available if you are running macOS Monterey and later on a M1 or M2 Mac, or an Intel Mac with a T2 chip).Use macOS Recovery to reinstall macOS via the web.Make a copy of the macOS installer on a USB stick, reformat your drive and then install the macOS on to your Mac from the installer.If you are happy to take the risk and still want to wipe your Mac and reinstall macOS – which you should definitely do if you are selling or passing on your Mac – read on! Three ways to clean install macOSĪs we explained above, there is more than one way to wipe your Mac and reinstall macOS: Again, the seal guarantees that everything is fine and that nothing untoward has crept in. All components are checked after installation, then signed and finally the entire system is sealed again. As long as your Mac works (which can be determined on the basis of the seal), the Mac is considered to be in working order as it complies with Apple’s specifications.įor that reason, even if you do encounter problems on Macs with T2 chip or Apple Silicon while running macOS it makes no sense to reinstall the system yourself.įor those who want to do a clean install so that no leftovers that belong to an old system are carried along, this no longer applies because none of this information is carried over. However, if your Mac boots up without issue then it indicates that there are no problems with the system. Should this happen you will have to reinstall the system. Should a problem occur with macOS during a restart, perhaps because a storage space on the SSD is defective and thus a system component is no longer intact, this will be recognized by the startup process since the seal will now be invalid. Incidentally, you can still find the macOS software on the Mac App Store.So macOS itself cannot be changed by any software that you install as a user. One of the benefits of this is that your Mac can be set to automatically download the latest updates and install them, keeping your Mac up-to-date with minimum effort on your part. Now operating system updates come in via Software Updates which is either located in System Settings > General > Software Update or in System Preferences > Software Update (pre-Ventura). However, that changed with Mojave, which arrived in 2018. Since the arrival of the Mac App Store in 2011 (as an update to Snow Leopard) versions of Mac OS X and macOS have been available to download via the Mac App Store. Very old versions of Mac OS X came on a disk and any security updates came via Software Update. If you want to update your Mac to a newer version of macOS the method will be determined by the version of macOS you are running. It’s easy to find out which version of macOS is running on a Mac.įoundry How to install the latest version of macOS If you want to install the latest beta of macOS read about joining Apple’s beta program. You can install a beta version of Sonoma and test new features that haven’t yet launched. We have a full list of which Macs run which versions of macOS here. macOS 14: Sonoma (Sunburst) – Novem(Latest: 14.1.1).macOS 13: Ventura (Rome) – Novem(Latest: 13.6.2).macOS 12: Monterey (Star) – Octo(Latest: 12.7).
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