Securely wipe and update Macbook Air

Man of Honour
Joined
20 Sep 2006
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Or go this root if you have a decent Internet connection. I always preferred the offline method though.
Either way you have to download the ISO, be it recovery doing it all for you or you doing it in the OS, so I wouldn't have thought it would make the blindest bit of difference.
 

Deleted member 138126

D

Deleted member 138126

If you do it direct from the Internet, it will give you the version of MacOS that shipped with the laptop, not ideal. You should download Sierra in the app store, cancel when it prompts you to install it (the download stays on the hard drive), then follow any number of step by step instructions on how to make a bootable flash drive, boot on to it, wipe, and reinstall.
 
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