modify code for bug1241, note user to partition before install the system, adjust /etc/fstab

modified:   dialog/di_dialog.py
	modified:   interface/ri_data.py
	modified:   interface/ri_tk_cmd.py
	modified:   operation/configure_fstab.sh

interface/ri_data.py

@@ -1,6 +1,6 @@
 #!/usr/bin/python
 
-import re
+import re,os
 import commands
 from xml.dom import minidom
 from xml.dom.ext import PrettyPrint
@@ -52,6 +52,12 @@ class Partition:
         self.from_os      = fr
         Partition.dict[dev] = self
 
+    @staticmethod
+    def check_partitions():
+        cmd = "grep d[a-z][0-9] /proc/partitions>/dev/null"
+        ret = os.system(cmd)
+        return ret
+
     @staticmethod
     def init_from_os():
         ''' create a Partition instance from hardware info'''