


Click Restart now under "Advanced startup.".Navigate to Update & Security > Recovery.Click the Start menu and select Settings.If you're using Windows 10 or 8.1, you can usually enter the BIOS from the desktop:.All BIOS are different, but what you'll need to do is find the section labeled "Boot Order" (it will be a list of drives connected to your computer) and move the USB controller (or the optical drive) to the top of the list.

Now that you have your Debian installer ready to go, you'll need to make sure you can boot from it. Configure your PC so that it can boot from a USB or optical drive.
