Question
How to disable warning about MacOS version update? I’d like to know how to tell the system to be silent about a potential update to Big Sur as it will just annoy. Is that straightforward to do and if so, how? Obviously, I need the system to get security updates where necessary.
Solution 1: Change Software Update settings in System Preferences
Step 1: Open the System Preferences on your Mac.
Step 2: Click on the Software Update.
Step 3: Click the checkbox next to the Automatically keep my Mac up to date option.
Step 4: Click on the Advanced button.
Step 5: Click the checkboxes next to the Check for updates option and Install system data files and security updates option.
Solution 2: Execute Terminal command
Requirements
- Apple School Manager
- Apple Business Manager
- User-approved MDM (Mac Device Management Profile)
Major new releases of macOS can be hidden when using the
softwareupdate(8)command with the--ignoreflag, if the Mac is enrolled in Apple School Manager, Apple Business Manager, or a user-approved MDM. This change also affects macOS Mojave and macOS High Sierra after installing Security Update 2020-004.
Reference
What’s new in the updates for macOS Catalina
Step 1: Open the Terminal app on your Mac.
Step 2: Type the following in the Terminal window:
sudo /usr/sbin/softwareupdate --ignore“macOS Big Sur” or
softwareupdate --ignore “macOS Big Sur”
Step 3: Press the Enter key.
Step 4: Enter your login password.
Step 5: Press the Enter key.
