如果傳回的 I/O 錯誤值不是定義在標準 FsRtl 篩選器中，它會被轉換成下列保證在篩選器中的錯誤值。在這個狀況下，資訊會遺失，但篩選器可以正確處理意外狀況。

If an I/O error is returned which is not defined in the standard FsRtl filter, it is converted to the following error which is guaranteed to be in the filter. In this case information is lost, however, the filter correctly handles the exception.