After erasing the Mac, it will display the Setup Assistant and be ready to be set up like new. This ability means you can simply download and install macOS Sonoma over your current macOS version when prompted, and then select the new erase function in Sonoma, which will erase your Mac and leave the core macOS system intact. Not only does this effectively erase all user data and user-installed apps from your Mac without reinstalling macOS, it also signs out your Apple ID, removes your Touch ID fingerprints, purchases, and all Apple Wallet items, and turns off Find My and Activation Lock, making it far easier to restore your Mac to like-new factory settings. Because storage is always encrypted on Mac systems with Apple silicon or the T2 chip, the system is instantly and securely "erased" by destroying the encryption keys. Since macOS Monterey, however, Apple has included a third option for newer Macs that offers a very simple and straightforward way to erase your Mac without needing to reinstall the operating system.įollowing in the footsteps of the iPhone and iPad, Apple silicon Macs and Intel Macs with a T2 security chip (2017-2020 models) now have an "Erase All Content and Settings" option available in macOS Monterey and Sonoma. However, even if neither of these issues have arisen for you, sometimes it's just nice to start afresh for that "brand new Mac" feeling and then migrate your apps, documents, and data, either manually, or by migrating from a Time Machine backup.Ĭlean installing previous versions of macOS usually involves creating a bootable copy of the macOS installer on a flash drive or USB stick and then reformatting your drive before installing the bootable copy on your Mac, or using macOS Recovery to reinstall the Mac operating system over an internet connection. This article explains how to perform what is effectively a clean install of Sonoma using a built-in option that's available on Apple silicon-powered Macs and Intel Macs with a T2 security chip.Ĭlean installing macOS is often done to remove annoying quirks and strange behaviors that a Mac may have inherited over time, and can also help to reclaim disk space caused by junk files left by third-party apps. Tying them all together really makes sense.Apple is set to release macOS Sonoma on September 26, and whenever a new operating system is released for the Mac, some users prefer to perform a clean installation. I am finding the new mission control to be very useful though, especially when I tend to have 20-30 apps open at the same time, but wasn't ever a fan of spaces. On the trackpad I can see myself getting used to it, but on the mouse scrollwheel too? That's just weird. On a side note, have you tried Lion yet? What do you think? Personally, I think the new scroll style is particularly off-putting. Windows installs are tied down to the machine they're installed on rather than being hardware independent, so if your Windows machine breaks, it's a long and hard data extraction process awaiting you. If you have an Apple Remote, holding down the Menu key during boot up achieves the same effect though.ĭid you know you can boot OSX on any machine? Just another of the advantages of Mac. This might not work if you use a wireless keyboard as the Bluetooth stack isn’t initiated until a little while into boot time. Alternatively, to choose during start-up, just hold down the Option/Alt Key on your keyboard.
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