2006 MT stock with 60k miles. When I'm in first gear with my clutch pedal fully pressed to the floor there is this whining noise as if something is spinning. It doesn't happen with any other gears. If im going 15+mph and I try and shift into first I cannot put the shifter into first and the whining noise is there again. If cruising in first gear with my clutch in (going to a stop sign) the whining noise is there.

P.S I dont use first to slow down at high rates of speed, It was just something I came across.