diff --git a/src/main.tsx b/src/main.tsx
index 004d7f0..1b67e61 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -14,7 +14,7 @@ createRoot(document.getElementById('root')!).render(
   </StrictMode>,
 )
 
-if ('serviceWorker' in navigator) {
+if (import.meta.env.PROD && 'serviceWorker' in navigator) {
   window.addEventListener('load', () => {
     let refreshing = false
 
diff --git a/vite.config.ts b/vite.config.ts
index 4c8e795..cf77bcd 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -7,6 +7,11 @@ export default defineConfig({
   server: {
     port: 3501,
     strictPort: true,
+    // W: 是 RaiDrive 網路磁碟，不會發 fs 事件，需用 polling 才能觸發 HMR
+    watch: {
+      usePolling: true,
+      interval: 300,
+    },
     proxy: {
       '/api': 'http://127.0.0.1:8788',
     },