So recently my machine has been in my backpack travelling with me due few reasons. When I came home today and mounted it all up again, one of my HDDs became RAW system and I am unable to access it. Now Windows keeps insisting that I should format the drive but I really need to preserve most of the saved data. Iv downloaded TestDisk but have no idea how to use it. Is there a way to at least recover my files? I really need to get another backup drive to have my important work saved on. Using Windows 7 x64 Pro.