I attempted an install of 12.04 on my main pc. I mistakenly left-on the power to my 300G external drive.
During the install for some odd reason it began installing to the 300Gb external with all my important files on it. When I seen the light glow on the external i immediately canceled the install.
In retrospect I have 298Gb free on the drive with 3 empty folders: etc, lost+found, and media. All my former data isn't accessible (of course) and only shows these 3 folders.
Question: How can i get my drive back to its former state; un-install the install; or recover my data?