

Speaking of which, if an old version is what you're looking for, it may be worth taking a look at another article where we focus on that entirely: How to download and install old versions of OS X on a Mac.īefore you start, you need to know that there are two ways to do a clean installation of macOS. We'll start by showing how to do this for the latest version of macOS (which will be macOS Monterey from 25 October 2021), before moving on to the far tricker business of installing a clean copy of an older version of macOS ( Big Sur, Catalina, High Sierra, Sierra, El Capitan, Mojave, Yosemite or an even old version of OS X).

Whatever the cause, if your Mac does seem to be behaving strangely, a clean install of the macOS can solve a lot of problems. It's also something computer users often resort to when they are trying to get rid of a virus (although there is a lot of debate about whether there are viruses on the Mac). Additionally, some people like to do a clean install when they are updating their Mac to a new version of macOS. This is often a good option if your Mac is running slow or otherwise misbehaving. In this article we're going to show you how to perform a clean install of macOS.
