This message is often displayed in a rather basic video mode, so I think it should be kept under 80 characters. The admonition to close the tray is at least arguably unnecessary, so I'm going to sacrifice that, leaving:
Please remove the installation medium, then press ENTER:
This message is often displayed in a rather basic video mode, so I think it should be kept under 80 characters. The admonition to close the tray is at least arguably unnecessary, so I'm going to sacrifice that, leaving:
Please remove the installation medium, then press ENTER: