How To Update Macos High Sierra 10136 To 1015 Jun 2026

Look at the overview tab to see your exact model name and year (e.g., MacBook Pro (Retina, 15-inch, Mid 2014) ).

The desktop loaded. It looked cleaner, brighter. He clicked the Apple logo once more.

Major operating system upgrades alter core system files. Skip preparation, and you risk data loss. 1. Check Your Storage Space

Apple no longer prominently features Catalina on the App Store (it now promotes newer OS versions), but the direct link still works. how to update macos high sierra 10136 to 1015

Your Mac will restart. Do not close the lid or turn off your Mac during this process. The screen may go black for long periods. Phase 4: Post-Update Steps

Help you decide if updating is worth it for your specific MacBook model.

Follow the on-screen instructions to begin the installation. Look at the overview tab to see your

Search for "macOS Catalina" in the App Store.

When he clicked the link, the App Store flickered and loaded a page for macOS Catalina . The "Get" button stared back at him.

Once the download is complete, the installer should open automatically. If not, go to your Applications folder and open "Install macOS Catalina". He clicked the Apple logo once more

Catalina does not support 32-bit apps. Before upgrading, check your system for legacy software that will cease to work. Phase 2: Downloading macOS Catalina (10.15)

Once you're booted into macOS Catalina for the first time, there are a few final tasks: