diff --git a/pym/cl_template.py b/pym/cl_template.py
index 74f4e41..e6781ee 100644
--- a/pym/cl_template.py
+++ b/pym/cl_template.py
@@ -3122,10 +3122,10 @@ os_disk_install not found mount point '\' and '\%s'")%mountPoint)
             reGrubEntry = re.compile("title.*?(?=title|$)", re.S | re.I )
             grubconf = reRemoveComments.sub("",open(pathGrubConf,'r').read())
             roothd = filter(lambda x: x[1] == '/',
-                            zip(self.objVar.Get('os_disk_grub'),
+                            zip(self.objVar.Get('os_disk_dev'),
                                 self.objVar.Get('os_install_disk_mount')))
             if roothd:
-                roothd = "root (hd%s)" % roothd[0][0]
+                roothd = "root=%s" % roothd[0][0]
                 replace = ("".join(filter(lambda x: not roothd in x,
                                       reGrubEntry.findall(grubconf)))).strip()
         textTemplateTmp = textTemplateTmp[:resS.start()] + replace +\