Problem with Retropie + KOD

Hi all
I’ve buyed Raspberrypi3 some monhts ago, with raspbian preinstalled

Then I istalled on it Retropie, with autostart on retropie

Recently I’ve installed Kody on Raspbian, and (from Retropie) i’ve changed the autostart config from retropie to kodi
All work good, but now….

How can i start in Ratropie or raspbian? How to have command prompt?

thanks for reponse