Just make sure you don’t lose anything in the shuffle: Risky as it sounds, a clean install enables a healthier life for your macOS. In contrast to a regular install which puts macOS on top of your startup disk content, a clean installation cleans everything up. If you’re determined to give your Mac a new life, run a clean install of Catalina. Click the plus button to split your disk, name your partition, and customize the size if needed. Your disk will be the first on the list under “Internal.” Select the disc and navigate to Partition tab.

To install Catalina on a partition, go to Applications > Utilities > Disk Utility. Basically, it allows to split your disk into two parts, so that your computer can run two operating systems at the same time.

If you’re not ready to give up Mojave just yet, you can install Catalina on a partition.

If required, verify the account by entering your system password or with Touch ID.

Open the PKG file and agree to the installation.

Find and launch the installer in your Downloads folder.

Go to and click Account in the top menu bar.

How to install a developer beta of macOS Catalinaĭownloading and installing macOS Catalina developer beta is an easy deal if you have a Developer account. From redundant apps to caches and leftovers, you can remove any unnecessary items with CleanMyMac X. Even if you have enough, running a cleanup is a nice way to start a clutter-free life in Catalina. You need to free up some space for your new macOS. You can use Apple’s in-built Time Machine or more advanced tools like Get Backup Pro if you want a bootable backup. To keep your data safe, create a backup before upgrading. Remember though, that a new macOS means a new start-wiping away the past.

When we’re too excited, we tend to rush things. CleanMyMac X will help you quickly filter applications by 32-bit and get rid of them: Once you install macOS 10.15, you’ll be warned about 32-bit apps not working on your Mac any longer. In Catalina, you’ll have to limit your Mac to 64-bit applications only. Mojave was the first macOS to stop admitting 32-bit apps to the App Store and the last to support them. Sometimes the reason why you can’t upgrade lies on the surface: It’s not too different from what we had last year, but take a look anyway. As usual, there’s a limited number of Apple devices that support macOS 10.15. Your to-do list for the upcoming upgrade:Įnsure your device is compatible. Try free ✕ A few things before you switch to Catalina

Update mac 10.10.5 to 10.11