Why is there a ? mark and where are my images

Hi Gregory,

Based on screen capture, I notice that your drive O is not connected. 

I'm pretty sure it is the reason of all question marks.

If your drive was connected and you still have question marks on your directories, it means they are missing based on LRC files.

Remember that it is recommended to move files between drives or repertories directly through LRC. The move will be replicated on your drives.

hope my explanations are clear (my mother tongue is french).

See https://www.lightroomqueen.com/lightroom-photos-missing-fix/