Here are the root on the 5th string major and minor barre chord forms.
Below are the names of the notes on the 5th string of the guitar that you can use as a reference.
Major Barre Chord Root on the 5th String
This chord gives a lot of people trouble, click here for some major barre chord root 5th string extra help.
Minor Barre Chord Root on the 5th String
Because you are only playing your 5th and 1st strings with your 1st finger, an actual barre is not necessary. All you need to do is make sure that you are pressing down those 2 strings.
Page 2, Root on the 6th String Barre Chords