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An operating system upgrade can take time. We recommend setting aside a full day for the process. While the active time you will be working on this will be minimal, you may not have productive access to your computer during your upgrade day.

Any large upgrade of a computer presents a small chance for problems. If a problem occurs, ITS may need to intervene, and that may take some time. We strongly recommend choosing a time when you do not have a critical need for the computer within a business day of the upgrade if something goes wrong. For example, we would not recommend upgrading your computer the day before travel or during the weekend before an important conference.  

 Confirm that you have at least 26GB of free space required to perform the upgrade. If you don’t have enough space, you may need to offload some files to OneDrive or an external hard drive. Alternatively, you could delete unused applications. If you need assistance, please contact the Help Desk. 

To check your available free space: 

1. Click the Apple icon in the upper left corner of your screen.

2. Click About this Mac.

3. Click the Storage tab

4. Under Macintosh HD (or similar name), the available space is shown.