必須刪除可寫入的目錄分割 %1，即使使用者並未選擇要刪除它。這個目錄分割的存在造成降級操作無法完成。請以手動方式刪除目錄分割。

The writable directory partition %1 must be deleted even though the user did not select it to be deleted. The existence of this directory partition prevents the demotion operation from completing. Delete the directory partition manually.