I think this might be because I am not the owner. I have opened the folder as administrator and can view all the files but can't copy them because of the permissions. The old HDD is in a caddy connected by USB. I think I might have to recursively change owner of all sub folders in terminal?
1 Answer
I worked it out.
sudo chown [new-owner] -R [folder]
-R does it recursively to all subfolders. Phew!