Thanks a million for your reply Sebastian,
Doing it via UI is a bit slow since i have to type in the mac of the device.
We are imaging PCs on our standalone network and sending them to different sites.
The only reason why i want to register them is to change the computer name.
In Clonedeploy there was an option to do quick deployement and just type in the machine name.
I know i am a pain but is there a way to avoid the reboot during quick registration and just go back to the main menu in pxe boot?