We can either install or upgrade an existing OpenBSD installation, in addition we can "misuse" the installation CD as a rescue CD and enter the shell by pressing S.
Answer the following questions as shown below. Default answers are always shown in brackets, simply pressing enter answer a question using this default.
Terminal type? [vt220] vt220
Do you wish to select a keyboard encoding table? [n] n
Proceed with install? [n] y