home-assistant · lezmaka · May 31, 2025 · May 31, 2025 · May 31, 2025 · May 31, 2025
@@ -515,6 +515,25 @@ def native_value(self) -> StateType:
 
         return attr  # type: ignore[no-any-return]
 
+    @property
+    def available(self) -> bool:
+        """Return True if entity is available."""
+        found = False
+        external_usb = self._api.external_usb
+        assert external_usb is not None
+        if "device" in self.entity_description.key:
+            for device in external_usb.get_devices.values():
+                if device.device_name == self._device_id:
+                    found = True
+                    break
+        elif "partition" in self.entity_description.key:
+            for device in external_usb.get_devices.values():
+                for partition in device.device_partitions.values():
+                    if partition.partition_title == self._device_id:
+                        found = True
+                        break
+        return found and super().available
+
 
 class SynoDSMInfoSensor(SynoDSMSensor):
     """Representation a Synology information sensor."""