diff --git a/Makefile b/Makefile
index 38cc2cecaf950d3ad1401a9308b99aeb779de7d7..9d9fbea7f9cf5a64bea0f624810f36643a0f2ee3 100644
--- a/Makefile
+++ b/Makefile
@@ -50,6 +50,9 @@ agent:
 	${ENV} ${GO_BUILD} -tags "osusergo netgo static_build" -ldflags '$(LDFLAGS)' $(BUILDFLAGS) -o bin/os-agent cmd/agent/main.go
 	strip bin/os-agent
 
+test:
+	$(GO) test $(shell go list ./... ) -race -cover -count=1 -timeout=300s
+	
 # Install CRDs into a cluster
 install: manifests
 	kubectl apply -f confg/crd
diff --git a/cmd/agent/server/docker_image_test.go b/cmd/agent/server/docker_image_test.go
index cc77a2bc5560ce6c05afbb436055ab88208f14bc..9987939390dbe33dbc3a97d026352d0fc4002d24 100644
--- a/cmd/agent/server/docker_image_test.go
+++ b/cmd/agent/server/docker_image_test.go
@@ -52,24 +52,3 @@ func TestpullOSImage(t *testing.T) {
 	}
 	defer os.RemoveAll("/persist")
 }
-
-func TestrandStringBytesRmndr(t *testing.T) {
-	type args struct {
-		n int
-	}
-	tests := []struct {
-		name string
-		args args
-		want string
-	}{
-		{name: "normal", args: args{n: 6}, want: ""},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if got := randStringBytesRmndr(tt.args.n); got == "" {
-				t.Errorf("randStringBytesRmndr() not generatre random string")
-			}
-
-		})
-	}
-}
diff --git a/cmd/proxy/controllers/os_controller.go b/cmd/proxy/controllers/os_controller.go
index 09e58f9db9dadc081dd0550852374a6f0103a958..fdd31eaafbae2c5daadf80c16b692e95ad178d0d 100644
--- a/cmd/proxy/controllers/os_controller.go
+++ b/cmd/proxy/controllers/os_controller.go
@@ -15,6 +15,7 @@ package controllers
 
 import (
 	"context"
+	"fmt"
 	"os"
 
 	corev1 "k8s.io/api/core/v1"
@@ -123,6 +124,8 @@ func (r *OSReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Re
 			if err := r.Connection.RollbackSpec(); err != nil {
 				return values.RequeueNow, err
 			}
+		default:
+			return values.RequeueNow, fmt.Errorf("operation %s cannot be recognized", opsType)
 		}
 	}
 	return values.Requeue, nil
diff --git a/scripts/bootloader.sh b/scripts/bootloader.sh
index 5760f3dc739df816aadb6c5dfa3cfeb37220cce1..16c5713dfcac23ec41f3d5a72763e5f0b6722205 100644
--- a/scripts/bootloader.sh
+++ b/scripts/bootloader.sh
@@ -6,14 +6,6 @@ ARCH=`arch`
 
 function install_grub2_x86 ()
 {
-    # make boot.img/core.img and setup, to support legacy boot mode
-    GRUBNAME=$(which grub2-install)
-    echo "Installing GRUB2..."
-    GRUB_OPTS=${GRUB_OPTS:-"--force"}
-    GRUB_OPTS="$GRUB_OPTS --target=i386-pc"
-
-    $GRUBNAME --modules="biosdisk part_msdos" $GRUB_OPTS $DEVICE
-
     # make efi file, and save in FAT16 partition, to support UEFI boot mode
     cp -r /usr/lib/grub/x86_64-efi boot/efi/EFI/openEuler
     eval "grub2-mkimage -d /usr/lib/grub/x86_64-efi -O x86_64-efi --output=/boot/efi/EFI/openEuler/grubx64.efi '--prefix=(,gpt1)/EFI/openEuler' fat part_gpt part_msdos linux"