Test MacOS after Upgrade

Preparation

Ensure all essential data is backed up

Make sure you have a stable and uninterrupted power source

Check for sufficient free disk space for the upgrade

Verify system requirements for the new macOS version

Before Upgrading

Check for any incompatible software or hardware

Update all existing applications to their latest versions

Disable any third-party security software temporarily

Deauthorize any licensed software

Check internet connectivity and speed

Upgrade Process

Download the macOS upgrade package from the App Store

Begin the installation process and follow the on-screen instructions

Allow sufficient time for the installation to complete

Restart the Mac after the installation finishes

System Performance

Verify if the Mac is running smoothly without any noticeable lag or slowdown

Test basic functions like opening and closing applications, launching files, and accessing system preferences

Check for any unusual system behavior or error messages

Test sleep and wake functions

Confirm that system animations and transitions are functioning properly

Connectivity and Network

Test Wi-Fi connection and ensure it is stable and reliable

Check Bluetooth connectivity and test pairing with devices

Ensure all network connections (Ethernet, VPN, etc.) are functioning correctly

Verify if AirDrop, Handoff, and Continuity features are working as expected

Software Compatibility

Test compatibility of critical software applications with the new macOS version

Check for any software crashes or compatibility issues

Verify if all previously installed software is functioning properly

Test compatibility of plug-ins, extensions, and add-ons

Peripheral Devices

Test functionality of external devices such as printers, scanners, and cameras

Verify if all peripheral devices are recognized and functioning correctly

Test USB ports and other connectivity options

Security and Privacy

Review and update security settings and preferences

Test if FileVault and firewall settings are working correctly

Review and adjust privacy settings according to preferences

Check if antivirus and anti-malware software is compatible and functioning properly

Data and File Integrity

Verify if all personal files, documents, and folders are intact and accessible

Test file opening, saving, and editing functions in various applications

Confirm if Time Machine backups are working correctly

Check if iCloud synchronization is functional and up to date

Final Checks

Perform a final system restart and ensure everything is working as expected

Run system diagnostics or hardware tests if available

Re-enable any temporarily disabled security software

Verify if all licensed software has been reauthorized

Update any remaining software to the latest versions

It is important to note that this checklist provides a general framework, and additional sections/items may be required based on specific user requirements or preferences.