SDH is listed in the "Subtitles" menu.
It's usually listed as "Subtitled for the Deaf and Hard-of-Hearing." Every Disney movie I have on DVD has SDH when I got the Languages option in the movie itself.
Not hard. All SDH is a subtitle with auditory explanation that like a gun going off, or the lyrics to a song (which not all closed captioning or subtitles have.)
"It is my task to convince you not to turn away because you donít understand it." - Richard Freynman