Add PyInstaller compatibility for diskpart script location handling

- Detect if running as PyInstaller executable using sys.frozen
- Use different directory priority order for PyInstaller vs development:
  - PyInstaller: prioritize user home directory and executable location
  - Development: prioritize current working directory
- Include executable directory (sys.executable) as fallback for PyInstaller
- Ensures diskpart script creation works reliably in both scenarios
- Addresses file access issues when running as compiled executable

usb_creator_gui.py

@@ -275,25 +275,70 @@ assign letter={usb_drive[0]}
 exit
 """
         
-        # Write diskpart script to a safe temporary location
+        # Write diskpart script to an accessible location - try multiple directories
         import tempfile
         import os
         
-        # Use Windows temp directory and ensure file is accessible
-        temp_dir = os.environ.get('TEMP', os.environ.get('TMP', 'C:\\Windows\\Temp'))
-        script_path = os.path.join(temp_dir, f'diskpart_script_{os.getpid()}.txt')
+        script_filename = f'diskpart_script_{os.getpid()}.txt'
+        
+        # Check if we're running as a PyInstaller executable
+        is_frozen = getattr(sys, 'frozen', False)
+        
+        # Try multiple directories in order of preference
+        # For PyInstaller executables, prefer more reliable directories first
+        if is_frozen:
+            candidate_dirs = [
+                os.path.expanduser('~'),  # User home directory (most reliable for executables)
+                os.environ.get('USERPROFILE', ''),  # Windows user profile
+                tempfile.gettempdir(),  # Python's temp directory
+                os.environ.get('TEMP', ''),  # Windows TEMP
+                os.environ.get('TMP', ''),  # Windows TMP
+                os.path.dirname(sys.executable),  # Directory where executable is located
+                'C:\\Temp',  # Common temp directory
+                os.getcwd(),  # Current working directory (may be temp for PyInstaller)
+                'C:\\Windows\\Temp'  # System temp directory
+            ]
+        else:
+            candidate_dirs = [
+                os.getcwd(),  # Current working directory (good for development)
+                os.path.expanduser('~'),  # User home directory
+                os.environ.get('USERPROFILE', ''),  # Windows user profile
+                tempfile.gettempdir(),  # Python's temp directory
+                os.environ.get('TEMP', ''),  # Windows TEMP
+                os.environ.get('TMP', ''),  # Windows TMP
+                'C:\\Temp',  # Common temp directory
+                'C:\\Windows\\Temp'  # System temp directory
+            ]
+        
+        script_path = None
+        last_error = None
+        
+        # Try each directory until we find one that works
+        for temp_dir in candidate_dirs:
+            if not temp_dir or not os.path.exists(temp_dir):
+                continue
+                
+            try:
+                candidate_path = os.path.join(temp_dir, script_filename)
+                
+                # Try to write script file
+                with open(candidate_path, 'w') as script_file:
+                    script_file.write(diskpart_script)
+                
+                # Verify file exists and is readable
+                if os.path.exists(candidate_path):
+                    script_path = candidate_path
+                    self.status.emit(f"Created diskpart script: {script_path}")
+                    break
+                    
+            except Exception as e:
+                last_error = e
+                continue
+        
+        if not script_path:
+            raise Exception(f"Failed to create diskpart script in any accessible directory. Last error: {last_error}")
         
         try:
-            # Write script file
-            with open(script_path, 'w') as script_file:
-                script_file.write(diskpart_script)
-            
-            # Ensure file exists and is readable
-            if not os.path.exists(script_path):
-                raise Exception(f"Failed to create diskpart script at {script_path}")
-            
-            self.status.emit(f"Created diskpart script: {script_path}")
-            
             # Run diskpart to format the USB drive
             self.status.emit("Formatting USB drive...")
             result = subprocess.run([
@@ -361,11 +406,17 @@ exit
                 raise Exception(f"Failed to format USB drive (Error {e.returncode}): {e}")
         except PermissionError:
             if script_path and os.path.exists(script_path):
-                os.unlink(script_path)
+                try:
+                    os.unlink(script_path)
+                except:
+                    pass
             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)
+                try:
+                    os.unlink(script_path)
+                except:
+                    pass
                 
             # Check if it's a Windows elevation error
             error_str = str(e).lower()