I am using Lightroom CC. I had a disk failure and had to move all my data to a new drive. Now it will not open those files but when I try to re-import them it tells me that they are already in the library. How can I get LR to re-recoginize the existing data?
[Branched from a previous discussion]
Importing (or re-importing) the photos is not the way to do this. Not only will it not solve the problem, it would make the problem worse.
Instead you point Lightroom to the new location of the photos. See these instructions (particularly Figure 4 and associated text): Adobe Lightroom - Find moved or missing files and folders