Start yast installer at login


I’m trying to make a livecd that it would give me the option to install suse without booting to desktop. I got greate advice to start yast2 live-installer after login befor desktop starts up, but i’m having problems realising that. I tried with a script that would run as service, i tried with a script that would start at first boot but nothing worked. The closest i got was with my first try where i put the yast2 live-installer --qt comand into script that runs at first boot. But that only showes me the live-installer window for a second and then its run over by the kernel loading procedure.

Does anyone how to start live-installer at login or does anyone know why is it run over by kernel procedure even if i don’t abort the install?

Thanks for any help