

You can either let it decide what to remove or go through its scan results yourself and decide what to trash and what to keep.Īs you will see below, there are a couple of different ways you can upgrade to Catalina, but before you decide, and certainly before you upgrade, you should make a full backup of your current Mac setup. It’s very quick and easy to use and will help you get rid of clutter, making your Mac run more smoothly and freeing up tens of gigabytes of disk space. My recommendation after years of experience upgrading Macs is that you use CleanMyMac X.


Likewise, it’s always a good idea to clear out the clutter before you upgrade. As you can imagine, upgrading your operating system on a junk-filled Mac is rather like putting one layer of wallpaper on top of another - eventually, you have to scrape it off and start again. And as you upgrade year after year, you accumulate more and more. That means that all the system junk your Mac has accumulated over the years stays there. When you do a regular upgrade, the installer replaces some files on your Mac with others but leaves most untouched. If your Mac still runs Mojave or an even older macOS version, you’ll be amazed by all the new features and improvements in Catalina. So here’s how to upgrade to macOS Catalina. MacOS Catalina was the newest operating system by Apple until macOS Big Sur succeeded it in 2020.
