As the skin is confluence:
On the kodi main screen scroll to videos, on the lower menu select files, in the new list locate your HDD, highlight the location of your movies, mine are stored in a folder called movies, if yours is just the hdd highlight that, bring up the context menu, and select set content, you will have a new menu askising to select the content type, movies, TV shows or music videos, select movies and then press okay in the option.
Give it a minute or so to scan, after that a new section on the home screen saying movies will be available, showing your movies.
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