diff --git a/tests/drivers/flash/common/boards/fk7b0m1_vbt6.overlay b/tests/drivers/flash/common/boards/fk7b0m1_vbt6.overlay
new file mode 100644
index 00000000000..6373e977575
--- /dev/null
+++ b/tests/drivers/flash/common/boards/fk7b0m1_vbt6.overlay
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2025 STMicroelectronics
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/delete-node/ &storage_partition;
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* Set last blocks of the code flash as storage partition */
+		storage_partition: partition@1e0000 {
+			label = "storage";
+			reg = <0x1e000 DT_SIZE_K(8)>;
+		};
+	};
+};
diff --git a/tests/drivers/flash/common/boards/mini_stm32h7b0.overlay b/tests/drivers/flash/common/boards/mini_stm32h7b0.overlay
new file mode 100644
index 00000000000..a9aec960bfa
--- /dev/null
+++ b/tests/drivers/flash/common/boards/mini_stm32h7b0.overlay
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2025 STMicroelectronics
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/delete-node/ &storage_partition;
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* Set 2 last blocks of the code flash as storage partition */
+		storage_partition: partition@1e000 {
+			label = "storage";
+			reg = <0x1e000 DT_SIZE_K(8)>;
+		};
+	};
+};