Just a quick note; Startup Disk Creator will only make bootable USB Drives NOT Bootable DVD's. To make a bootable DVD use a Disc Burning program like BRASERO using the BURN IMAGE option and selecting your ISO image.
I trashed a Windows 7 install trying to make a dual boot laptop. I should have read the instructions first. Well now it's just a Linux Laptop :-)
Ubuntu 14.04.2