The purpose of this screen is to provide operating system information to the operator. A list of installed GS/OS drivers is displayed as they are loaded.
This alternate screen is normal and is generated by pressing the space bar as GS/OS begins to load--whether starting up from a local disk or over the network. The screen will not appear unless someone presses the space bar sometime during the initial stages of booting the Apple IIGS.
If an Apple IIGS displays the alternate screen even when the space bar hasn't been pressed, there may be a hardware malfunction, and the unit should be serviced.