You need at least 12.5 GB to 18 GB of free space to perform an upgrade, though the installer itself is roughly 8 GB .
Your Mac must officially support Catalina. Generally, this includes MacBook Pro (mid-2012 or later), MacBook Air (mid-2012 or later), and iMac (late 2012 or later). Method 1: Download via the Mac App Store (Recommended) This is the standard approach for most users.
If the App Store method fails or is unavailable, you can pull the installer directly from Apple's servers using Terminal. This requires to be currently installed. download catalina macos installer
Before starting your download, ensure your setup meets these requirements:
When prompted if you want to download macOS Catalina, click "Download" . You need at least 12
If you are downloading to create a bootable installer, your current Mac must be running macOS Mojave 10.14 or later .
Click the "Get" button. This will often trigger the "Software Update" pane in System Preferences. Method 1: Download via the Mac App Store
Once finished, the file named "Install macOS Catalina" will be in your Applications folder. Method 2: Download via Terminal
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