![]() ![]() If you’re not sure how much space you’ve got on your Mac, there are various ways to check storage space on your Mac. You’ll need at least 20-30GB of hard drive space to install macOS Catalina. If you’ve forgotten Apple ID your username and password, you can recover it here. This will also be required during installation so that Catalina can access iCloud. You’ll need to log into the App Store with your Apple ID in order to download and install Catalina. The easiest way to do this is to backup to an external hard drive using macOS Time Machine. It’s important to make sure that you have a backup of your Mac hard drive in case anything goes wrong installing Catalina or essential apps stop working with it. To check which Mac you have, go to the Apple Logo in the top left of your screen and select About This Mac. ![]() To upgrade to macOS 10.5 Catalina, you’ll need to make sure you have one of the following Macs:Ģ012 MacBook Air and later (not mid-2012) Check Whether Your Essential Apps Are Catalina Compatible
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