Major and Minor Barre Chords

This is a 1.95 minute video response from Matt Brown on Nov 1st, 2008

Question:

"Kris Weller asks, "I was taught to use the aminor shape on major and minor barre chords the only difference was the majors root is on the 6th and the minor on the 5th and barring the the remaining i saw an example in the chord library using the amajor shape and muting the 1st string how is that done and which is correct?""