diff --git a/interface/ri_oper.py b/interface/ri_oper.py
index 6be6e05..7784abc 100644
--- a/interface/ri_oper.py
+++ b/interface/ri_oper.py
@@ -20,6 +20,9 @@ import ri_data
 import os
 import subprocess
 
+if os.path.isfile("../xml/install.xml"):
+            ri_data.init_from_xml()
+
 display_operation = None
 display_sub_operation = None
 display_scale = None
@@ -277,8 +280,8 @@ class BootLoader(Operation):
     def __init__(self,scr):
         Operation.__init__(self,"Install bootloader",u"安装引导程序","install_bootloader.sh",scr)
         self.return_value[2]=("Bootloader type hasn't been specified",u"没有指定引导程序的类型")
-        self.return_value[3]=("Bootloader hasn't been implemented",u"没有执行bootloader")
-        self.return_value[127]=("Bootloader utils not found",u"没发现bootloader的utils")
+        self.return_value[3]=("Bootloader hasn't been implemented",u"没有实现bootloader")
+        self.return_value[127]=("No tool to bootloader. E.g grub",u"没有安装引导程序的工具。如grub等")
 
     def get_arguments(self):
         # only grub?
@@ -289,20 +292,35 @@ class ConfigureBootloader(Operation):
     def __init__(self,scr):
         Operation.__init__(self,"Configure bootloader",u"配置bootloader","configure_bootloader_cnf.sh",scr)
         self.return_value[2]=("Bootloader type hasn't specified",u"没有指定引导程序的类型")
-        self.return_value[3]=("Bootloader hasn't been implemented",u"")
+        self.return_value[3]=("Bootloader hasn't been implemented",u"没有实现bootloader")
         self.return_value[4]=("Bootloader configuration file doesn't exist",u"引导程序配置文件不存在")
 
     def get_arguments(self):
-        bootloader=[]
+        list=[]
+        tp="grub"
+        isboot=False
+        isroot=False
         # FIXME if tag file format is error?
         if os.path.isfile("/tag"):
             fd = open("/tag","r")
             string = fd.read()
             list = string.split('-')
-            for instance in ri_data.MountPoint.list:
-                if instance.directory == '/':
-                    # only grub?
-                    bootloader=['-t','grub','-r',instance.device,'-k',ri_data.SerialNumber.value,'-o',list[0][5:].split('.')[0]+'.'+list[0][5:].split('.')[1]]
-                    break
-        fd.close()
+            fd.close()
+
+        bootloader=['-t',tp,'-o',list[0][5:].split('.')[0]+'.'+list[0][5:].split('.')[1]]
+
+        for instance in ri_data.MountPoint.list:
+            if instance.directory == '/' and not isroot:
+                bootloader+=['-r',instance.device]
+                print "root"
+                isroot=True
+                continue
+            if isroot and instance.directory == '/boot' and not isboot :
+                bootloader+=['-b',instance.device]
+                print "boot"
+                isboot=True
+                continue
+
+        if ri_data.SerialNumber.value:
+            bootloader+=['-k',"linx_serial=%s" %ri_data.SerialNumber.value]
         return bootloader