Reducing time betwwen power on BBB and appearance of penguin image on screen.

When I start my BeagleBoneBlack I found that the logo of penguin appears on the screen after about 15 seconds, how can I reduce this time to 0???
thanking you.

U-boot: setenv bootdelay 0

Hello Maxim,

I am new to Linux. Can you tell me procedure to set bootdelay?

Thanking you.

Hello Maxim
I set bootdelay to 0. Still the same problem.