How To Update Macos High Sierra 10.13.6 To 10.15 Jun 2026

Check the box for or click the Time Machine icon in the menu bar and select Back Up Now . Step 4: Download the macOS Catalina Installer

Re-enter your Apple ID credentials to sync your iCloud services.

Scroll down to the section titled "Use a web browser" and click the hyperlink for . how to update macos high sierra 10.13.6 to 10.15

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The most important change in macOS Catalina is the . High Sierra was the last version of macOS to run 32-bit apps without restrictions. Check the box for or click the Time

macOS Catalina requires approximately 18.5GB of free storage to upgrade from earlier versions. Go to About This Mac > Storage to check.

Since Catalina is not the newest OS, it does not appear in the "Software Update" section of System Preferences. Open the on your Mac. This public link is valid for 7 days

Scroll down the left sidebar to the category and select Applications .

Choose whether to enable or skip the new digital wellness tracking feature.

Instead, you must use the direct download method described below.

Ensure you have plenty of free space. An overfull hard drive can cause the installation to fail. Delete old files, empty your Trash, and uninstall applications you no longer need.