Windows installation distributive type.
enum _PRL_GUEST_DISTRO_VERSION_ENUM { PGD_UNKNOWN = 0, PGD_WINDOWS_VISTA = 1, PGD_WINDOWS_XP = 2, PGD_WINDOWS_XP_32 = PGD_WINDOWS_XP, PGD_WINDOWS_XP_64 = 3, PGD_WINDOWS_VISTA_32 = PGD_WINDOWS_VISTA, PGD_WINDOWS_VISTA_64 = 4 };
PrlEnums.h