I import my images from my "working" external drive and back them up to another external drive and my computers hard drive. I work on my files then when I remove the working drive, plug it back in...... LR cannot find my images. There is a ! in the right corner of each images.. when I click on it, It says LR cannot find image. This is on all of the images. It will search for the image but I have to have the image number and I need thousands of images found. If I try to import them again the images are greyed out. I'm assuming that my initial set up was done incorrectly so I have 2 questions. Can LR find all of my images and how do i set it up the right way....can you direct me. I've read over and over to use this system but I've had such a hard time with it.