External Hard Drive Read Only Issue and Solution

Overview

I usually use an external USB drive to backup my files, documents,  scripts, pictures and other important data. Recently, I was using a Samsung 1TB external drive and I was moving it back and forth between several machines.  I was using a different computer (actually, it was a laptop) than the one I was regularly using at the time and something happened to my external USB drive.
Right-click > New didn't work. In fact, it was not even showing on the screen.
The Delete button on the keyboard didn't work; pressing it didn't do anything.






Files, folders, the entire disk seemed to be write protected, or read-only.

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