How to make Ubuntu USB flash drive using Disk Image Writer

The commonly known methods to create a bootable USB flash drive to install Ubuntu on a computer is by using Startup Disk Creator or using UNetBootin. However, if you try either of these methods with recent versions of Ubuntu, you get this error when you boot up the flash drive on a computer:

SYSLINUX 6.03 EDD 20150813 Copyright (C) 1994-2012 H. Peter Anvin et al
Boot Error

The most reliable solution I have found for this error is to create a bootable USB flash drive using Disk Image Writer.

It is simple to do this:

  • Download the ISO file of the Ubuntu you want to install.

  • Make sure that GNOME Disks utility is installed. If you do not have it, it can be installed easily:

$ sudo apt gnome-disk-utility
  • Insert the USB flash drive you want to use as the installer medium.

  • In your file manager, right-click on the ISO file and choose to open with Disk Image Writer. If you do not get this option, an alternative method is to open Disks from your start menu or execute gnome-disks at the shell. First click on the USB flash drive in the left column. Next click the menu in the top-right corner and choose to Restore disk image.

  • Pick the ISO file and choose to restore it to the USB flash drive. It might warn that the destination is larger than the ISO, that is OK. After it is done, you can remove the USB flash drive.

This USB flash drive can now be used to boot and install Ubuntu successfully on any computer.

Tried with: Ubuntu 15.10 and GNOME Disks 3.16.2

Missing parameter error on boot from Ubuntu startup disk


I made a startup USB flash drive for Ubuntu 15.04 using Startup Disk Creator as described here. I booted a computer using this flash drive and the boot process threw this error:

Missing parameter in configuration file. Keyword: path
gfxboot.c32: not a COM32R image

(This error happens even if the drive is created using UNetBootIn as described here. It happens with Ubuntu 14.10 too.)


Type help at the boot prompt. It will show a menu of options. Hit Enter here and Ubuntu will boot up as it should have.

How to create Ubuntu installer USB flash drive using UNetBootin

You might be working on a Ubuntu system and might want to create a USB flash drive to install Ubuntu on another computer. Doing this is easy:

  • First download the ISO file of the Ubuntu version that you want to install.

  • Plug in the USB flash drive you want to use to install.

  • Install UNetbootin on your existing Ubuntu system:

$ sudo apt install unetbootin
  • Open UNetbootin. Ignore the Distribution section at the top. In the Diskimage section at the bottom, choose the path of the Ubuntu ISO file you downloaded earlier. Choose the partition of the USB flash drive as the Drive and press OK.

  • After UNetbootin is done, unmount the USB drive and plug it into the system where you want to install Ubuntu. Reboot it, you will get a UNetbootin menu, choose Install Ubuntu here and you are on your way to installing it 🙂

Tried with: UNetbootin 2.0.2 and Ubuntu 14.04