diff --git a/src/system/boot/platform/openfirmware/devices.cpp b/src/system/boot/platform/openfirmware/devices.cpp
index ecc6a2e363..601ac5059c 100644
--- a/src/system/boot/platform/openfirmware/devices.cpp
+++ b/src/system/boot/platform/openfirmware/devices.cpp
@@ -187,12 +187,15 @@ platform_add_block_devices(stage2_args *args, NodeList *devicesList)
 status_t 
 platform_register_boot_device(Node *device)
 {
-	disk_identifier &disk = gKernelArgs.boot_disk.identifier;
+	disk_identifier disk;
 
 	disk.bus_type = UNKNOWN_BUS;
 	disk.device_type = UNKNOWN_DEVICE;
 	disk.device.unknown.size = device->Size();
 
+	gKernelArgs.boot_volume.SetData(BOOT_VOLUME_DISK_IDENTIFIER, B_RAW_TYPE,
+		&disk, sizeof(disk_identifier));
+
 	return B_OK;
 }