I recently upgraded my OS from XP to 8.1 with the help of a friend. All is working correctly but my external harddrive. I no longer can access it. The farthest I can get is going on XP and trying to unlock it. It will let me put in my password but then says non writable partition. I’m assuming something happened when going from xp to 8.1 but I can’t firgure out what to do so I don’t loose all of my pictures and video dating back to 2008. And music too I guess. I really just care about the videos as I have my pictures all backed up on my PS3. I’m freaking out here and would LOVE some help.