Almost all questions I've found here are outdated. I've already tried using UNetbootin and WINusb and neither have worked. When I used UNetbootin, once I booted the computer from the USB, it was stuck in a continuous loop of counting down from ten until boot, but would never actually boot. When I tried using WINusb I receive an error message when I try to install the ISO onto the USB saying: Installation failed! Exit code: 256 Log: Formating device... Error:Error opening /dev/sdb: No medium found. I'm new to the command line so please give all answers with easy directions. Thanks in advance.
in case YUMI doesn't work - try universal usb installer
it worked for me always from Windows. Please double check your .iso file whether it has been downloaded properly or not?