In DRIVE PX2 Autochauffeur unable to enter boot mode

Hello,

I am unable to enter into boot menu in Drive PX2.
I tried with Ctrl-Alt-F1 but did not get any console.
I tried with pressing shift key but still I am unable to enter into boot menu.
Can you please guide me in this regard.

Dear Pratosha,

May I know why you are trying to enter into boot menu on DPX2? Thanks.