extern char *do_sfdisk_disk_geometry (const char *device);
extern int do_vg_activate_all (int activate);
extern int do_vg_activate (int activate, char * const* const volgroups);
extern char *do_sfdisk_disk_geometry (const char *device);
extern int do_vg_activate_all (int activate);
extern int do_vg_activate (int activate, char * const* const volgroups);