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How to: Get your Mac ready to update

1. Open Utilities by clicking ‘Go’ on the top menu bar of your desktop

2. Open Disk Utility

3. Select ‘Macintosh HD’ and click on ‘First Aid’

Note: Your drive may be named differently so select the top partition first

4. Click ‘Run’ to run a repair on the disk

5. Click ‘Continue’ to start the repair

Note: Your Mac will be unresponsive until the repair finishes. Don’t open other Apps until it’s complete

6 .You will be prompted ‘First Aid process is complete. Click Done to continue.’ when the repair is done.

Click ‘Done’

7. Repeat steps 3-6 on ‘Macintosh HD – Data’

Note: Your drive may be named differently so select the second partition first