Now there is only single win8 OS on my laptop. How I create usb with ubuntu installer, but after reboot win 8 with sytem repair and nothing ubout ubuntu installation. I have cheked BIOS settings: usb is first. PS I want to repalce win 8 by ubuntu
Download Unetbootin for windows and then from Unetbootin select the Ubuntu ISO image as per image
IMPORTANT option , select the
Until you create a Live Bootable USB Disk from above method , USB Drive cannot boot .
If you want to replace your Windows 8 installation do follow this Answered question here as
As you said , if you want to replace Windows , then from this illustrated answer at this option
Select the second Option as
The problem was the flash drive. With CD everything was installed properly. The appearance of the error windows at the same time as trying to install Ubuntu made me very confused.