[Gmsh] Re-meshing .msh

[Leguay Romain]

Leguay Romain <romain.leguay at etu.u-bordeaux1.fr> a écrit :

> Good morning everyone.
>
> I'm a new user in gmsh. I already have a surface mesh and I need to  
> create a volume mesh. Is it possible to do this operation?
>
> Regards,
> Romain LEGUAY
>

I found some commands in the Internet:
Merge "<mesh>"

Surface Loop(1) = {1};
Volume(1) = {1};

I put those lines in a .geo file but it the 3D meshing doesn't work:
Self intersection surface mesh, computing intersections (this could  
take a while)
Surface mesh is wrong, cannot do the 3D mesh

How can I resolve those type of error?
Moreover, it said to check the full log for details but where is it?

Regards,
Romain LEGUAY