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- With the Mac completely powered down, power it on and wait for the chime.
- As soon as the startup chime sounds hold down the Shift key.
- Once the Apple logo appears on screen release the Shift key.
- A Safe Mode stamp on the menu bar and login screen will help you know if you did it correctly.
Combo/OS Updates
What is a combo update?
For a quick way to update an older iteration of an OS to the latest (outside of major releases) it's a good idea to work with combo updates to apply major patches instead of just grabbing them all through software update.
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