February 18, 2026
How to upgrade or update your Mac
Detailed instructions on how to update your Mac computer can be found on Apple's support website:
Backup Your Data
Although not a requirement, it is recommended you backup your data prior to upgrading the Operating System. Your Mac's OS includes a built-in backup feature called Time Machine. More information can be found about Time Machine how to use it on Apple's support website here.
Update Your Software Applications
Whenever you update or upgrade your macOS, it is recommended to check for updates for other software you use regularly. Apps such as Microsoft Office, Cisco VPN, and Citrix Workspace usually check for updates on their own, but other apps may require a manual update. The Company Portal application in your Applications folder have the current versions of these Enterprise software available for download. If your Mac is not yet enrolled, you can follow the steps found here to enroll it.
To see the list of currently supported versions of macOS, click here
Finding older Mac OS installers
If your Mac is compatible with a Supported OS but Software Update cannot find it:
- Open Safari (no other browser will work with these links)
- Go to https://support.apple.com/en-us/HT211683
- Choose a version of macOS that is compatible with your Mac, provided it is Supported (see table)