Otherwise, you have to burn the image to a disk Boot to live disk/USB Now that you created some space for your Ubuntu OS, and have created a media to install it, you can start the installation process ...
How-To Geek on MSN
Stop using Rufus to make bootable USBs—this free, open-source alternative makes them far more useful
Your USB drive should be able to store and boot as many operating systems as its storage capacity allows.
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