segue between different storyboard

segue-between-different-storyboard.m

 // Get the storyboard named secondStoryBoard from the main bundle:
 UIStoryboard *secondStoryBoard = [UIStoryboard storyboardWithName:@"secondStoryBoard" bundle:nil];

 // Load the initial view controller from the storyboard.
 // Set this by selecting 'Is Initial View Controller' on the appropriate view controller in the storyboard.
 UIViewController *theInitialViewController = [secondStoryBoard instantiateInitialViewController];
 //
 // **OR**  
 //
 // Load the view controller with the identifier string myTabBar
 // Change UIViewController to the appropriate class
 UIViewController *theTabBar = (UIViewController *)[secondStoryBoard instantiateViewControllerWithIdentifier:@"myTabBar"];

 // Then push the new view controller in the usual way:
 [self.navigationController pushViewController:theTabBar animated:YES];