The booting process of a cPad is:
1. Black screen for about 10 seconds.
2. White screen with a Cartadis logo for about 1 minute 30 seconds.
3. Full white screen for 5 seconds followed by a beep warning, then a progress bar lasting about 10 seconds. During the progress display you can enter a code (called the 'Z' code) in order to access the configuration menu.
The Z code is a finger touch in each corner of the cPad screen in this order: top left, top right, bottom left, bottom right.