The first line displayed on this screen is:
Doing base system install...
followed by 'yum' output as it copies all the RPM package header files from the CDROM cAos repository. After gathering these it examines them and determines whether it needs to add any other packages to the pile it must copy to satisfy dependencies when installing the base system.
When "yum" is satisfied that it knows what packages to copy, it begins copying the RPM software package files. This will take a while, depending on the speed of your CDROM and/or computer.
After all RPMs have been copied they will be installed. This will take a while, but is dependent on the speed of the install computer's hardware (processor, bus, disks).
The last few lines displayed on this screen will be:
System has been installed... Press [ENTER] to continue...
so press the "Enter" key to return to the "Installation and Configuration menu" screen.