how to update macos high sierra 10.13.6 to 10.15

How To Update Macos High Sierra 10.13.6 To 10.15

Before you begin, there are three critical things you need to know:

Upgrading from macOS High Sierra 10.13.6 to macOS Catalina 10.15 is a major jump that replaces outdated system structures with modern features like dedicated media apps and iPad screen sharing. Key Benefits of Upgrading how to update macos high sierra 10.13.6 to 10.15

Summary: If you have a 2013+ Mac with an SSD and no 32-bit apps, download the installer from Apple’s legacy URL, backup, and run the installer. If not, stay on High Sierra. Before you begin, there are three critical things

To update your Mac from macOS High Sierra 10.13.6 macOS Catalina 10.15 Apple logo → System Preferences → App Store

Part 6: Troubleshooting Common Upgrade Problems

Even under ideal conditions, things can go wrong. Here are the top issues when updating from High Sierra to Catalina.

Before you begin — checklist

  • Apple logo → System Preferences → App Store (or Software Update).
  • Install any available updates, then restart.

C. Free up space

Catalina needs at least 20–25 GB of free space to install.

  1. Preparation: Your Mac will prepare for the update by creating a bootable installer and verifying the integrity of the installation package.
  2. Reboot: Your Mac will restart and boot into the macOS Recovery environment.
  3. Installation: The installer will copy the necessary files and perform the installation.
  4. Configuration: Your Mac will configure the new operating system and transfer your files and settings.