Methods and apparatus to provide dynamic messaging services are disclosed. An example method includes determining, in a pre-boot environment, supported dimensions for display of information on the display screen; generating, in the pre-boot environment, restricted dimensions that are less than the supported dimensions; providing the restricted dimensions to an operating system of a virtual machine supported by a virtual machine manager, wherein the restricted dimensions define a boundary between a first screen portion and a second screen portion; displaying first information in the first screen portion and displaying second information in the second screen portion; and preventing, via the virtual machine manager, elimination of the first screen portion from the display screen.