How To Update: Macos High Sierra 10.13.6 To 10.15

Once downloaded, the installer will open automatically (named "Install macOS Catalina"). Click . Agree to the software license agreement.

This link will automatically redirect you to the page for Catalina. Click the Get or Download button. 2. Run the Installation

Since Apple hides older OS versions, you have two main ways to get the installer.

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If you encounter issues during or after the update process, here are some troubleshooting steps:

macOS Catalina runs on the following Macs (most Macs that ran High Sierra can run Catalina):

Once the download is complete, the installer may open automatically. If not, find in your Applications folder and double-click it. This link will automatically redirect you to the

Always plug your MacBook into a wall outlet during an OS update to prevent unexpected shutdowns. Step 3: Back Up via Time Machine

Before starting, it's crucial to determine if your Mac is compatible with macOS Catalina. While most Macs capable of running High Sierra can be upgraded, not all are supported. Apple has provided an official list of compatible models.

. Check your critical apps for 64-bit compatibility before proceeding. Apple Support Community Step 2: Prepare Your Mac Run the Installation Since Apple hides older OS

Upgrading from macOS High Sierra 10.13.6 to macOS Catalina 10.15 is a substantial but rewarding project. The key to success lies in thorough preparation: verifying your Mac is compatible, creating a Time Machine backup, eliminating 32-bit apps, and freeing up disk space. While the Mac App Store is no longer functional on High Sierra, using Safari to access Apple's direct download page is a reliable workaround.

You will be prompted to set up features like Screen Time and choose your visual theme (Light Mode, Dark Mode, or Auto).

. Check your critical apps for compatibility using tools like before upgrading. Apple Discussions

You will be prompted to re-enter your Apple ID credentials.