I want to do band structure calculation of Magnesium silicide for GGA in
VASP. Can anyone please help how to do this by setting initial
INCAR tags and
I assume your structure is relaxed.
The 1st step: self-consistent calculation to obtain converged charge density (uniform K mesh).
The 2nd step: non-self-consistent calculation to obtain the eigenvalue along a high symmetry path by reading previous converged charge density.
PS: you can generate the high symmetry path with VASPKIT.
Hope it helps.