How to install OS from USB-stick by creating a bootable USB-stick and starting from it
less than a minute
See also our video(In this video, K3OS is chosen as the operating system):
Prerequisites
you need a bootable USB-stick (see also this Guide)
Steps
Plug the USB-stick into the device
Reboot
Press the button to go into the boot menu. This step is different for every hardware and is described in the hardware manual. If you do not want to look it up you could try smashing the following buttons during booting (the stuff before the operating system is loaded) and hope for the best: F1, F2, F11, F12, delete
Once you are in the boot menu, select to boot from the USB-stick