What is the easiest way to reinstall 14.04 LTS?

Question

I've lost the thumbdrive that had the image on it. Is there some way to reinstall without one?

E: It's a reinstall over an existing ubuntu install. Windows issues really aren't all that relevant.

Answer 1

Note: If you already have Ubuntu installed, then you should follow this guide on how to reinstall in Ubuntu.

1. Download Unetbootin from here.
2. Run Unetbootin.
3. From the drop down menu under Type: select Hard Disk
4. Next select the Diskimage. Browse to the directory where you downloaded the iso file.
5. Press OK.
6. Now restart your computer. Select Unetbootin when the menu appears where it shows your operating system. It should look something like this:
7. Afterwards, simply proceed with the installation as normally.
8. Now you should be able to install Ubuntu without a USB or a CD.

Another alternative that you can do is use your Android phone. There is an application on the Google Play Store titled DriveDroid that you can get here. The interface will assist you to get Ubuntu on your machine. You will need to have root to use this application.