I saw some similar posts but they are a bit different from my situation. So I downloaded Kali Linux amd64 made a bootable usb and everything is ok. Live starts with no problem but when I try to install it makes some kind of CDRom check and it does not find it. That's because I don't have it. I do not have cdrom drive I never use it and I want to install the OS from the USB stick. I don't know why even it does that stupid check but does anyone know how to make a complete USB installation?