Data moving will take like 10 hours.
Start the move.
Go to bed.
Wake up to find Windows has been waiting with baited breath for 9 and a half hours to know whether I want to move Thumbs.db too?
This stuff wouldn't be so silly but Windows made thumbs.db. It's a windows file. It consists of thumbnails of pictures in the directory that would not be there if they moved. *sigh*