Internet recovery knows my Wi-fi password?

[MyAppleWorld]

Hello
I followed apples guide to reset a computer before selling. I’ve reset the nvram and used disk utility to format the whole disk, not just the volume.

I’ve now done windows key + alt + r

it is showing me the spinning globe and very slowly loading the progress bar. I believe it is now downloading the latest OS before I can choose reinstall.

however, if I already formatted the entire disk, how does the Mac remember my Wi-fi? How can I get it to completely forget my Wi-fi network?

 

[lyuluck]

On the viewfinder bar at the top of the Mac screen, click the Wi-Fi icon.

Click to open network preferences. You can also forget or delete the network through "System Preferences". Click the Apple logo in the upper left corner of the Mac screen, then click System Preferences> Network.

On the left sidebar, click Wi-Fi.

Click Advanced.

Scroll through the preferred networks to find the network you want to delete.

Click the network, and then click the (-) to forget it.


If you want to keep the network, but don't want to join automatically. Click the check box next to the network name, and you can set your Mac to no longer automatically join the network within range.

If you Want to delete all networks at once. Press CMD + A on the keyboard to select all, and then click the (-).

Click OK to save the changes.


How to rejoin a forgotten Wi-Fi network

Once you forget the Wi-Fi network, boot automatically is not possible. However, you can easily rejoin it manually.

When in the Wi-Fi network range, click the network name and enter the password to rejoin. Now you will automatically join the network every time you enter the network range.

 

[BrianBaughn]

From what I've seen the password is stored in NVRAM. Perhaps check that you did it correctly.

Reset NVRAM on your Mac - Apple Support

If one or more settings stored in NVRAM don't work as expected on an Intel-based Mac, resetting NVRAM might help.

support.apple.com