Reboot MBA 2014

[Macalwaysalltheway]

I need to reboot/reset my MBA 2014 to pass it on. Which disk should Erase/reboot
I have

In the startup menu

251 GB SSD
- disk0s2
___________
disk1
- Mac OX Base system

I didnt do this since many years ago so I kind of forgot how to do it

 

[MightyGem]

You could boot into the Recovery mode and re-instal MacOS.

How to reinstall macOS – Apple Support (UK)

Use macOS Recovery, your computer’s built-in recovery system, to reinstall the Mac operating system.

support.apple.com

Or you could simply create a new Account and then delete yours.