I was simply trying to copy all my pictures from my C: drive to an external hard drive as backup but something went wrong.
I copied first 2 folders full of pictures that were on my desktop to the external hard drive and I had no problem. then I went in to the picture folder and copied everything over the external hard drive. Now when I try to access the pictures in my local Mac I receive an error saying: Photos cannot find library " Photos Library.photoslibrary" This library was last found on a drive named "My Passport for MAC". Please attacehthat drive and click "Try again" if we attaché the external USB drive and click ok we can access the pictures.
But what went wrong? I didn't cut and paste the pictures to the external USB drive, I only copied them! infact the c: on my mac is still completely full. Why I can't not access to the picture anymore ? and how can I fix this issue ? do I need to copy the library back ? from the USB external hard drive to the Mac ? Can someone help me with this issue please providing step by step, I am not a MAC person.