Add Windows administrator privilege checking and error handling

- Add is_admin_windows() function to check for administrator privileges
- Require administrator privileges on Windows startup with clear instructions
- Enhanced error handling in USB writing to detect elevation errors
- Provide clear guidance on running as administrator
- Handle WinError 740 and other elevation-related errors
- Resolves 'The requested operation requires elevation' error

usb_creator_gui.py

@@ -270,11 +270,26 @@ exit
         except subprocess.CalledProcessError as e:
             if script_path and os.path.exists(script_path):
                 os.unlink(script_path)
-            raise Exception(f"Failed to format USB drive: {e}")
+            
+            # Check if it's a permission error
+            if "Access is denied" in str(e) or "elevation" in str(e).lower():
+                raise Exception("Administrator privileges required. Please run the application as administrator.")
+            else:
+                raise Exception(f"Failed to format USB drive: {e}")
+        except PermissionError:
+            if script_path and os.path.exists(script_path):
+                os.unlink(script_path)
+            raise Exception("Administrator privileges required. Please run the application as administrator.")
         except Exception as e:
             if script_path and os.path.exists(script_path):
                 os.unlink(script_path)
-            raise Exception(f"USB creation failed: {e}")
+                
+            # Check if it's a Windows elevation error
+            error_str = str(e).lower()
+            if "winerror 740" in error_str or "elevation" in error_str or "administrator" in error_str:
+                raise Exception("Administrator privileges required. Please run the application as administrator.")
+            else:
+                raise Exception(f"USB creation failed: {e}")
     
     def _copy_directory_windows(self, src_dir, dst_dir):
         """Copy directory contents using robocopy for better Windows compatibility"""
@@ -740,15 +755,33 @@ class USBCreatorApp(QMainWindow):
             self.close()
 
 
+def is_admin_windows():
+    """Check if running with administrator privileges on Windows"""
+    try:
+        import ctypes
+        return ctypes.windll.shell32.IsUserAnAdmin()
+    except:
+        return False
+
 def main():
     app = QApplication(sys.argv)
     app.setApplicationName("MBetter USB Creator")
     app.setApplicationVersion("1.0")
     
     # Check for admin privileges
-    if platform.system() != "Windows":
+    if platform.system() == "Windows":
+        if not is_admin_windows():
+            QMessageBox.warning(None, "Administrator Required",
+                              "This application requires administrator privileges to format USB drives.\n\n"
+                              "Please run as administrator:\n"
+                              "1. Right-click on the executable or Python file\n"
+                              "2. Select 'Run as administrator'\n\n"
+                              "Or run from elevated command prompt:\n"
+                              "python usb_creator_gui.py")
+            sys.exit(1)
+    else:
         if os.geteuid() != 0:
-            QMessageBox.warning(None, "Admin Required", 
+            QMessageBox.warning(None, "Admin Required",
                               "This application requires sudo privileges.\n"
                               "Please run with: sudo python3 usb_creator_gui.py")
             sys.exit(1)