I just bought a used MBA 2013. The name of the first owner appears in every place, even after I erased everything from him in the machine. A clean install would help? Will I lose I Life?

If I make a clean install of the MacOS, will I lose I Life?
Is it possible to erase all information from the previous owner of the MBA?

eemarchetti wrote:
Is it possible to erase all information from the previous owner of the MBA?
See the Linc Davis Post here...
https://discussions.apple.com/message/25122088

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