How To Update Macos High Sierra 10.13.6 To 10.15
Click the or Download button on the interface. Your Mac will automatically launch the System Preferences framework to download the file package, which is roughly 8GB in size. Keep your Mac plugged into wall power and maintain an active network connection until it completes. How to download and install macOS - Apple Support
Since you are running 10.13.6, you cannot typically go directly through the standard App Store search. You need the official installer link. Download macOS Catalina via this direct App Store link.
Open the App Store and go to “Updates.” Install all pending updates for your existing High Sierra apps. This reduces compatibility issues after the OS upgrade.
If you run into any specific bugs or error messages during this installation, let me know. I can help you troubleshoot , guide you through creating a bootable USB installer , or help you find 64-bit alternatives for your favorite apps. Share public link how to update macos high sierra 10.13.6 to 10.15
To confirm your exact computer model, navigate to the in the upper-left corner of your screen and click About This Mac . Compare your machine's model year to the official list of supported hardware below: 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 or newer
Before downloading any files, you must verify that your specific Mac model officially supports macOS Catalina. Supported Mac Models for macOS Catalina 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 or newer Mac Pro: Late 2013 or newer How to Check Your Mac Model Click the Apple icon in the top-left corner of your screen. Select About This Mac .
High Sierra stopped receiving security updates in late 2020. Catalina continued receiving updates until mid-2022. Today, both are technically obsolete. The most secure macOS is Ventura or Sonoma – but your 10.13.6 Mac likely doesn’t support those. If security is paramount and you can’t upgrade hardware, consider a lightweight Linux distribution instead. Click the or Download button on the interface
You install Catalina. Stay on High Sierra or consider:
According to Apple's official specifications, your Mac is compatible with macOS Catalina if it is one of the following models:
Also, check for firmware updates for your Mac (these sometimes get bundled with macOS updates). Keeping your current OS as updated as possible (10.13.6 is fine, but ensure it’s the latest security update) smooths the transition. How to download and install macOS - Apple
Updating from High Sierra to Catalina requires a manual download of the installer, but the process is straightforward. Just remember to before you start, as this is the one update that breaks legacy software compatibility.
Catalina only supports 64-bit apps . Older versions of Microsoft Office, Adobe Creative Cloud, and legacy drivers will stop working. Use a tool like Go64 to identify which of your current apps will break after the update.