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Factory reset of the MacBook air

How to perform factory reset of my MacBook air

Most OS computers are all the same. Make sure all of your work documents are on a thumb drive. Turn it off. Then hold Command-R and press the Power On. You will get an installation app loaded and it will let you wipe the system or restore the last backup.

Hi

Follow the instructions here:

• macOS Sierra: Erase and reinstall macOS

最后更新：2017-08-21 16:57:06

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