.    @retval EFI_NO_MEDIA          The device has no medium.    @retval EFI_DEVICE_ERROR      The device reported an error.    @retval EFI_VOLUME_CORRUPTED  The file system structures are corrupted.    @retval EFI_WRITE_PROTECTED   The file or medium is write-protected.    @retval EFI_ACCESS_DENIED     The file was opened read-only.    @retval EFI_VOLUME_FULL       The volume is full.  