Software and operating system (OS) updates are very important for fixing issues and for keeping your computer secure.
Macintosh computers will regularly check for available OS updates from Apple. When an update is available, a dialog box will appear and ask to restart (to begin the upgrade process) or the upgrade can be deferred until later (15 minutes, 1 hour, 4 hours, or 1 day).
While updates can be deferred for up to 5 times, it is important to apply the update as soon as possible.
The upgrade process will begin by restarting the computer or when the maximum number of deferrals has been reached. Be sure to save your files before beginning the upgrade.
Users may be prompted to enter their computer password.
The time it takes to upgrade will vary based upon the size of the update and the speed of the computer.
Some upgrades will take several minutes and may restart the computer multiple times. After the upgrade has finished, the computer will be ready to be used.
Frequently Asked Questions
Do I need to back up my data before upgrading?
While it is not required to back up your data before upgrading the operating system, it is highly recommended that your data is backed up on a regular basis. For more information on backing up your computer, please review the UTS cybersecurity document Backing Up Data.
What happens if I do not upgrade my computer’s operating system?
It is a best practice to keep the computer’s operating system up to date. Computer companies release updates and upgrades to provide new features and to patch exploitable vulnerabilities. This improves the computer’s security and helps to prevent bad actors from obtaining your data. Upgrades will also improve the computer’s stability and reduce the risk of losing data.
How often are upgrades released?
Apple releases minor updates several times a year and a major version upgrade once a year (usually during the Fall).
Why do some users have to enter their password to upgrade while others do not?
Macintosh computers with Intel CPUs will not need to enter user passwords to upgrade the operating system, while computers with Apple Silicon CPUs do require users to enter their passwords. To find out which processor is in the computer, click on Apple Menu —> About This Mac.
What security improvements are in the update?
Apple maintains a support document which lists their security updates and Rapid Security Responses for Apple Software.