If you select as the value for the Use Automatic Inflation control, all surfaces in the model are selected to be inflation boundaries, except:
Surfaces that are members of Named Selections groups
Faces on non-enclosure bodies if an enclosure body is present
Faces on bodies that have manual inflations on them
Interfaces between bodies in a multibody part
Faces used in contact
Faces used in symmetry
Faces on bodies being meshed with Hex Dominant or manual Sweep controls
To view the faces that have been selected for inflation:
Select the Mesh object in the Tree Outline.
Right-click to display the context menu.
Select in the context menu.