How To Update Macos High Sierra 10.13.6 To 10.15 -

Upgrading from High Sierra to Catalina typically requires at least to download and install the installer package safely. Go to About This Mac > Storage to verify your available space. Delete temporary files, empty your trash, and move large media files to an external drive if you run short on space. Back Up Your Data via Time Machine

Clear out your Downloads folder, empty the Trash, and remove unused large files. Back Up with Time Machine Connect an external hard drive to your Mac. Go to > Time Machine . Click Select Backup Disk and choose your external drive.

By following these steps, you will successfully transition from High Sierra to the more secure and feature-rich Catalina, keeping your older Mac running securely.

Your cursor may have a spinning beach ball more often initially. That’s Spotlight reindexing your files. Leave your Mac on overnight, or wait 2–3 hours of normal use. To speed it up: System Preferences → Spotlight → Privacy tab → drag your main drive into the list → remove it after 30 seconds to force a fresh index. how to update macos high sierra 10.13.6 to 10.15

Once downloaded, a window titled will automatically pop up on your screen. Click Continue and accept the software license agreement.

You cannot simply “Check for Updates” from System Preferences on High Sierra. Apple’s Software Update will only offer you macOS Mojave (10.14) first, then maybe Catalina. Instead, use the direct method.

As of early 2025, Apple has discontinued Mac App Store support for macOS High Sierra. Users on High Sierra (10.13) report missing interface elements and failed sign-in attempts when trying to access the store. This means you cannot simply open the App Store and search for Catalina directly. Upgrading from High Sierra to Catalina typically requires

Your Mac may restart several times during this process. Do not close the lid or turn off the power. 5. Post-Installation Tips

Once the download finishes, the installation program will launch automatically on your desktop, displaying a large macOS Catalina window. Click on the welcome screen. Read and Agree to the software license agreement.

Good luck, and enjoy your upgraded Mac experience! Back Up Your Data via Time Machine Clear

After upgrading to macOS 10.15, take the following steps:

Open the and click the Updates tab to install any newly available security updates or compatible app revisions for your fresh installation of macOS 10.15.

Before you begin, verify that your Mac model is officially supported by Catalina. Generally, most Macs from are compatible. MacBook: Early 2015 or newer MacBook Air: Mid 2012 or newer MacBook Pro: Mid 2012 or newer Mac mini: Late 2012 or newer iMac: Late 2012 or newer iMac Pro: 2017 Mac Pro: Late 2013 or newer Technical Requirements: OS: OS X 10.9 (Mavericks) or later. Memory: At least 4GB of RAM (8GB recommended).