When OSX writes to a non-native file system (not HFS), that does not support resource forks, it writes extended info such as finder information into ._file. The file is hidden in finder so you will need to use a windows machine to delete it.
When OSX writes to a non-native file system (not HFS), that does not support resource forks, it writes extended info such as finder information into ._file. The file is hidden in finder so you will need to use a windows machine to delete it.