diff --git a/Mini vMac.xcodeproj/project.pbxproj b/Mini vMac.xcodeproj/project.pbxproj
index 4cf4366..d0b0be1 100644
--- a/Mini vMac.xcodeproj/project.pbxproj	
+++ b/Mini vMac.xcodeproj/project.pbxproj	
@@ -1415,6 +1415,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = net.namedfork.minivmac.macplus4m;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1451,6 +1455,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = net.namedfork.minivmac.macplus4m;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1487,6 +1495,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = net.namedfork.minivmac.macii;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1523,6 +1535,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = net.namedfork.minivmac.macii;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1559,6 +1575,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = net.namedfork.minivmac.mac128k;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1595,6 +1615,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = net.namedfork.minivmac.mac128k;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1631,6 +1655,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "net.namedfork.minivmac.macii-640x480";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1667,6 +1695,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "net.namedfork.minivmac.macii-640x480";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1703,6 +1735,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "net.namedfork.minivmac.macii-640x480";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1739,6 +1775,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "net.namedfork.minivmac.macii-640x480";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = YES;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 				USER_HEADER_SEARCH_PATHS = (
 					"\"$(SRCROOT)/Mini vMac/$(PRODUCT_NAME)\"",
 					"\"$(SRCROOT)/Mini vMac/\"",
@@ -1802,6 +1842,7 @@
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
+				SUPPORTED_PLATFORMS = "iphonesimulator iphoneos";
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -1851,6 +1892,7 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
+				SUPPORTED_PLATFORMS = "iphonesimulator iphoneos";
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 			};
@@ -1876,6 +1918,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = net.namedfork.minivmac;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE = "";
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = NO;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 			};
 			name = Debug;
 		};
@@ -1899,36 +1945,47 @@
 				PRODUCT_BUNDLE_IDENTIFIER = net.namedfork.minivmac;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE = "";
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = NO;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 			};
 			name = Release;
 		};
 		28F6B4951CF07DDD002D76D0 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				CLANG_ENABLE_MODULES = NO;
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				OTHER_CFLAGS = "-DHAVE_CONFIG_H";
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 			};
 			name = Debug;
 		};
 		28F6B4961CF07DDD002D76D0 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				CLANG_ENABLE_MODULES = NO;
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				OTHER_CFLAGS = "-DHAVE_CONFIG_H";
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 			};
 			name = Release;
 		};
 		28F6B4AF1CF07EC9002D76D0 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = NO;
 				HEADER_SEARCH_PATHS = "$(SRCROOT)";
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
@@ -1936,12 +1993,15 @@
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 			};
 			name = Debug;
 		};
 		28F6B4B01CF07EC9002D76D0 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = NO;
 				HEADER_SEARCH_PATHS = "$(SRCROOT)";
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
@@ -1949,26 +2009,34 @@
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 			};
 			name = Release;
 		};
 		28F6B4BD1CF07F32002D76D0 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 			};
 			name = Debug;
 		};
 		28F6B4BE1CF07F32002D76D0 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 			};
 			name = Release;
 		};
diff --git a/Mini vMac.xcodeproj/xcshareddata/xcschemes/Mini vMac.xcscheme b/Mini vMac.xcodeproj/xcshareddata/xcschemes/Mini vMac.xcscheme
index 252c85c..c6bf3cc 100644
--- a/Mini vMac.xcodeproj/xcshareddata/xcschemes/Mini vMac.xcscheme	
+++ b/Mini vMac.xcodeproj/xcshareddata/xcschemes/Mini vMac.xcscheme	
@@ -40,7 +40,7 @@
       </Testables>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Release"
+      buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"
diff --git a/Mini vMac/AppDelegate.m b/Mini vMac/AppDelegate.m
index c2ac758..378a72a 100644
--- a/Mini vMac/AppDelegate.m	
+++ b/Mini vMac/AppDelegate.m	
@@ -101,6 +101,10 @@ NSString *DocumentsChangedNotification = @"documentsChanged";
     NSBundle *emulatorBundle = [NSBundle bundleWithPath:emulatorBundlePath];
     [emulatorBundle load];
     sharedEmulator = [[emulatorBundle principalClass] new];
+    sharedEmulator.rootViewController = self.window.rootViewController;
+    sharedEmulator.showAlert = ^(NSString *title, NSString *message) {
+        [self showAlertWithTitle:title message:message];
+    };
     sharedEmulator.dataPath = self.documentsPath;
     return sharedEmulator != nil;
 }
@@ -167,8 +171,11 @@ NSString *DocumentsChangedNotification = @"documentsChanged";
         });
         return;
     }
+    BOOL wasRunning = sharedEmulator.isRunning;
     UIAlertController *alert = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert];
-    [alert addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil]];
+    [alert addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
+        [sharedEmulator setRunning:wasRunning];
+    }]];
     UIViewController *controller = self.window.rootViewController;
     while (controller.presentedViewController) {
         controller = controller.presentedViewController;
diff --git a/Mini vMac/EmulatorProtocol.h b/Mini vMac/EmulatorProtocol.h
index 057edd0..cbe7b19 100644
--- a/Mini vMac/EmulatorProtocol.h	
+++ b/Mini vMac/EmulatorProtocol.h	
@@ -38,6 +38,9 @@ typedef enum : NSInteger {
 @property (nonatomic, readonly) BOOL anyDiskInserted;
 @property (nonatomic, readonly) NSString *currentApplication;
 
+@property (nonatomic, strong) void (^showAlert)(NSString *title, NSString *message);
+@property (nonatomic, strong) UIViewController *rootViewController;
+
 - (void)run;
 - (void)reset;
 - (void)interrupt;
diff --git a/Mini vMac/InsertDiskViewController.m b/Mini vMac/InsertDiskViewController.m
index 590e5f3..ac79ffe 100644
--- a/Mini vMac/InsertDiskViewController.m	
+++ b/Mini vMac/InsertDiskViewController.m	
@@ -473,7 +473,7 @@
 }
 
 - (void)showFileActivityIndicatorWithTitle:(NSString*)title completion:(void (^_Nonnull)(UIActivityIndicatorView* activityIndicatorView))completionBlock {
-    UIActivityIndicatorView *activityIndicatorView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
+    UIActivityIndicatorView *activityIndicatorView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleLarge];
     if (@available(iOS 13, *)) {
         activityIndicatorView.color = [UIColor labelColor];
     } else {
diff --git a/Mini vMac/MYOSGLUE.m b/Mini vMac/MYOSGLUE.m
index 5683610..1324241 100644
--- a/Mini vMac/MYOSGLUE.m	
+++ b/Mini vMac/MYOSGLUE.m	
@@ -1471,13 +1471,8 @@ LOCALPROC MacMsgDisplayOn() {
     if (SavedBriefMsg != nullpr) {
         NSString *title = NSStringCreateFromSubstCStr(SavedBriefMsg, falseblnr);
         NSString *message = NSStringCreateFromSubstCStr(SavedLongMsg, falseblnr);
-        UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert];
-        blnr wasStopped = SpeedStopped;
-        [alertController addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
-            SpeedStopped = wasStopped;
-        }]];
+        sharedEmulator.showAlert(title, message);
         SpeedStopped = trueblnr;
-        [[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:alertController animated:YES completion:nil];
         SavedBriefMsg = nullpr;
         SavedLongMsg = nullpr;
     }
@@ -1642,6 +1637,8 @@ GLOBALPROC WaitForNextTick(void) {
 }
 
 @synthesize dataPath;
+@synthesize showAlert;
+@synthesize rootViewController;
 
 - (instancetype)init {
     if ((self = [super init])) {
@@ -1792,7 +1789,7 @@ GLOBALPROC WaitForNextTick(void) {
     [alertController addAction:[UIAlertAction actionWithTitle:NSLocalizedString(@"Save", nil) style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
         [self didMakeNewDisk:self->nameTextField.text size:size];
     }]];
-    [[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:alertController animated:YES completion:nil];
+    [sharedEmulator.rootViewController presentViewController:alertController animated:YES completion:nil];
 }
 
 - (void)didMakeNewDisk:(NSString*)fileName size:(NSInteger)size {
diff --git a/Mini vMac/SettingsViewController.m b/Mini vMac/SettingsViewController.m
index facc4ac..7367226 100644
--- a/Mini vMac/SettingsViewController.m	
+++ b/Mini vMac/SettingsViewController.m	
@@ -372,7 +372,7 @@ typedef enum : NSInteger {
             // links in about
             NSString *linkURL = aboutItems[indexPath.row][@"link"];
             if (linkURL != nil) {
-                [[UIApplication sharedApplication] openURL:[NSURL URLWithString:linkURL]];
+                [[UIApplication sharedApplication] openURL:[NSURL URLWithString:linkURL] options:@{} completionHandler:nil];
             }
         }
     }
diff --git a/Mini vMac/ViewController.m b/Mini vMac/ViewController.m
index f4a1384..0d5cb9b 100644
--- a/Mini vMac/ViewController.m	
+++ b/Mini vMac/ViewController.m	
@@ -90,6 +90,7 @@ API_AVAILABLE(ios(13.4))
     }
 }
 
+#if !defined(TARGET_OS_VISION) || TARGET_OS_VISION == 0
 - (BOOL)prefersStatusBarHidden {
     UIScreen *screen = self.view.window.screen;
     return CGRectEqualToRect(screen.bounds, self.view.window.bounds);
@@ -98,6 +99,7 @@ API_AVAILABLE(ios(13.4))
 - (UIStatusBarStyle)preferredStatusBarStyle {
     return UIStatusBarStyleLightContent;
 }
+#endif
 
 - (UIRectEdge)preferredScreenEdgesDeferringSystemGestures {
     return UIRectEdgeAll;