Major Scale Shapes
CAGED System

C Form

G major scale, based around the C chord form	This scale form is sometimes referred to as the Phrygian scale form. If you thought of the first note that you played (B) as the root, this would be the mode B Phrygian. Again this is just another name for you to refer to this particular scale fingering.
G	This is a movable major chord shape, based on an open C. Played with your 4th finger at the 10th fret, this is a G chord. Keep in mind that there is a difference between being based on a particular chord shape, and the actual chord sound.
	This scale form is built around this movable major chord shape, and is sometimes referred to as the C form (C AGED) of the major scale. It is not a C major scale, It is a G major scale based around the basic C major chord shape.

Down the neck to the D form

Up the neck to the A form