I'm using a laptop with Windows 10 and my plan was mounting Ubuntu's ISO on a USB, booting from that USB and installing Ubuntu on an external HDD so I can use it without having it inside my laptop.
So, I downloaded the ISO 16.04.1 desktop, downloaded Rufus and proceeded with the official guide, step by step.
Result: Mounting the ISO failed, I got an "Error while partitioning drive" and this showed up:
Now, my USB doesn't even work. When I plug it, Windows prompts me to format it. Formatting fails, Windows disconnects the USB.
Is there any way to solve this so I can try again mounting the ISO to discover Ubuntu or is my USB totally unrecoverable?