how do you drop D on your guitar?

Answer 1

Dropped D tuning means to detune the low E string down two half tones to D. So your guitar tuning would be

E
B
G
D
A
D (instead of E)

This tuning is used by Van Halen and groups like nickelback. It allows you to play power chords with one finger. For example, you can play E5 by:

E --------
B --------
G --------
D ----2---
A ----2---
D ----2---

Van Halen uses it in Unchained to get the low D bass sound in between chords in the intro.

Answer 2

Just tune your low E string down to a D...easy as that!

Answer 3

tune down the E string (the fattest one) to make it sound the same as the D string (third fattest string)

Answer 4

Tune your low E to D. When you do this, you will find that you can play one finger bar chords!! It's pretty awesome!!!!!!!!!!!