How can I erase my MacBook Air completely?

I have a MacBook Air (2015) that I need to clear all the emails, lists of name, logon, everything except the captain controls?

Look at these guidelines from Apple:

https://support.Apple.com/en-us/HT201065

Reformatting essentially in disk utility > Erase will wipe the HARD drive.

Ciao.

Tags: Notebooks

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