diff --git a/pkg/volume/gcepd/attacher.go b/pkg/volume/gcepd/attacher.go
index 9d67f67f584..9a481afce06 100644
--- a/pkg/volume/gcepd/attacher.go
+++ b/pkg/volume/gcepd/attacher.go
@@ -384,6 +384,14 @@ func (detacher *gcePersistentDiskDetacher) Detach(volumeName string, nodeName ty
 }
 
 func (detacher *gcePersistentDiskDetacher) UnmountDevice(deviceMountPath string) error {
+	if runtime.GOOS == "windows" {
+		// Flush data cache for windows because it does not do so automatically during unmount device
+		exec := detacher.host.GetExec(gcePersistentDiskPluginName)
+		err := volumeutil.WriteVolumeCache(deviceMountPath, exec)
+		if err != nil {
+			return err
+		}
+	}
 	return mount.CleanupMountPoint(deviceMountPath, detacher.host.GetMounter(gcePersistentDiskPluginName), false)
 }
 
diff --git a/pkg/volume/util/util.go b/pkg/volume/util/util.go
index 4eee6e9c526..72352feb1ec 100644
--- a/pkg/volume/util/util.go
+++ b/pkg/volume/util/util.go
@@ -22,6 +22,7 @@ import (
 	"os"
 	"path/filepath"
 	"reflect"
+	"runtime"
 	"strings"
 
 	v1 "k8s.io/api/core/v1"
@@ -29,7 +30,7 @@ import (
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
-	"k8s.io/apimachinery/pkg/runtime"
+	apiruntime "k8s.io/apimachinery/pkg/runtime"
 	utypes "k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/sets"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
@@ -196,7 +197,7 @@ func LoadPodFromFile(filePath string) (*v1.Pod, error) {
 	pod := &v1.Pod{}
 
 	codec := legacyscheme.Codecs.UniversalDecoder()
-	if err := runtime.DecodeInto(codec, podDef, pod); err != nil {
+	if err := apiruntime.DecodeInto(codec, podDef, pod); err != nil {
 		return nil, fmt.Errorf("failed decoding file: %v", err)
 	}
 	return pod, nil
@@ -582,3 +583,18 @@ func HasMountRefs(mountPath string, mountRefs []string) bool {
 	}
 	return false
 }
+
+//WriteVolumeCache flush disk data given the spcified mount path
+func WriteVolumeCache(deviceMountPath string, exec mount.Exec) error {
+	// If runtime os is windows, execute Write-VolumeCache powershell command on the disk
+	if runtime.GOOS == "windows" {
+		cmd := fmt.Sprintf("Get-Volume -FilePath %s | Write-Volumecache", deviceMountPath)
+		output, err := exec.Run("powershell", "/c", cmd)
+		klog.Infof("command (%q) execeuted: %v, output: %q", cmd, err, string(output))
+		if err != nil {
+			return fmt.Errorf("command (%q) failed: %v, output: %q", cmd, err, string(output))
+		}
+	}
+	// For linux runtime, it skips because unmount will automatically flush disk data
+	return nil
+}