Option Explicit
Sub Tri()
Dim n&
With Worksheets("FM")
n = .Cells(Rows.Count, 1).End(xlUp).Row: If n < 3 Then Exit Sub
Application.ScreenUpdating = 0: n = n - 1: .[A2].Resize(n).Copy
End With
With Worksheets("Feuil2")
.[J2].PasteSpecial xlPasteValues
.[J2].Resize(n).Sort .[J2], 1
.Select: [A1].Select
End With
End Sub