Showing a "No Bootable Device" error, what should I do?
Probably have been interrupted the installation process for the operating system, for example restarting the server or longer user inactivity before installing the operating system to the server first, this may cause the installation media to disconnect.
On the "Summary" tab in the user interface, click "Reinstall". After reconnecting the installation media, complete the installation process OS. Do not interrupt the installation by resetting the server from the user interface.