diff --git a/interface/ri_inst_cli.py b/interface/ri_inst_cli.py
index a13b5b5..7785290 100644
--- a/interface/ri_inst_cli.py
+++ b/interface/ri_inst_cli.py
@@ -16,7 +16,7 @@
 #       Ling Fen        2010-09-04              create
 #
 
-import ri_progress,re
+import ri_progress,re,os
 from ri_oper import language, Rate
 from snack import *
 def set_task(task_name):
@@ -29,14 +29,14 @@ def set_task_scale():
     ri_progress.i_percent = int(Rate.value)
 
 def set_task_over():
-    f = open('/proc/cmdline', 'r')
-    cmdline = f.readline().strip()
-    f.close()
-    #instmode = cmdline.split(' ')[0].split('=')[1]
-    for i in cmdline.split(' '):
-        if re.match('instmode=',i):
-            instmode = i.split('=')[1]
-            break
+    #f = open('/proc/cmdline', 'r')
+    #cmdline = f.readline().strip()
+    #f.close()
+    #for i in cmdline.split(' '):
+    #    if re.match('instmode=',i):
+    #        instmode = i.split('=')[1]
+    #        break
+    instmode = os.environ["instmode"]
     screen = SnackScreen()
     screen.drawRootText(0, 0, 'Rocky Security OS Install')
     screen.pushHelpLine(' ')
diff --git a/main/begin-install b/main/begin-install
new file mode 100755
index 0000000..d485570
--- /dev/null
+++ b/main/begin-install
@@ -0,0 +1,41 @@
+#! /bin/sh 
+
+work_as_net_inst_server(){
+    cp -a /net_inst_server/{exports,dhcpd.conf} /etc/
+    ifconfig eth0 145.16.3.254
+    /etc/init.d/portmap start
+    /etc/init.d/nfsserver start
+    /etc/init.d/tftpd-hpa start
+    /etc/init.d/dhcp start
+}
+
+#instmode=`cat /proc/cmdline | sed 's/.*instmode=\([^ ]*\).*/\1/'`
+source /usr/lib/new_install/text/get_instmode.sh
+
+if [ $instmode = 'Auto' -o $instmode = 'StateGrid' ];then
+    mkdir -pv /var/install/
+    cp /usr/lib/new_install/xml/install.xml /var/install/
+fi
+
+case $instmode in			
+	Auto)
+		cd /usr/lib/new_install/text
+		/usr/bin/python ./auto_install.py ;;
+	Text)
+		/usr/bin/setup -s ;;
+	StateGrid)
+		cd /usr/lib/new_install/text
+		/usr/bin/python ./state_grid.py
+		/usr/bin/python ./auto_install.py ;;
+	Gui)	
+		/usr/bin/setup -s ;;
+	NetInstallServer)	
+		work_as_net_inst_server ;;
+	Cancel)	
+		clear
+		exit ;;
+	*)	
+		echo "unknown select" ;;
+esac
+
+
diff --git a/operation/finish_install/98state_grid_custom.py b/operation/finish_install/98state_grid_custom.py
index cfa7ae3..6c1a200 100755
--- a/operation/finish_install/98state_grid_custom.py
+++ b/operation/finish_install/98state_grid_custom.py
@@ -14,14 +14,14 @@ homedir = ri_data.StateGrid.home_dir
 shell = ri_data.StateGrid.shell
 
 # run state grid custom scripts
-f = open('/proc/cmdline', 'r')
-cmdline = f.readline().strip()
-f.close()
-#instmode = cmdline.split(' ')[0].split('=')[1]
-for i in cmdline.split(' '):
-    if re.match('instmode=',i):
-        instmode = i.split('=')[1]
-        break
+#f = open('/proc/cmdline', 'r')
+#cmdline = f.readline().strip()
+#f.close()
+#for i in cmdline.split(' '):
+#    if re.match('instmode=',i):
+#        instmode = i.split('=')[1]
+#        break
+instmode = os.environ["instmode"]
 if instmode == 'StateGrid':
 	os.system("cp -r /usr/lib/StateGrid /mnt/opt/")
 	os.system("chroot /mnt /opt/StateGrid/setup.sh  %s %s %s" %(username, homedir, shell))
diff --git a/text/get_instmode.sh b/text/get_instmode.sh
new file mode 100755
index 0000000..d0f2fcc
--- /dev/null
+++ b/text/get_instmode.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+# get or set instmode's value
+
+tmp_file="/tmp/xrasmxioecnz"
+
+select_inst_mode(){
+    python /usr/lib/new_install/text/select_inst_mode.py
+    instmode=$(cat ${tmp_file})
+    rm ${tmp_file}
+}
+
+[ -z $instmode ] && instmode=`cat /proc/cmdline | sed 's/.*instmode=\([^ ]*\).*/\1/'`
+
+if [ "$instmode" = "HdInstall" -o "$instmode" = "NetInstall" ];then
+    select_inst_mode
+fi
+
+export instmode
diff --git a/text/select_inst_mode.py b/text/select_inst_mode.py
new file mode 100755
index 0000000..001db39
--- /dev/null
+++ b/text/select_inst_mode.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+
+from snack import *
+
+import os
+
+screen = SnackScreen()
+
+screen.drawRootText(0, 0, 'Welcome to Rocky Security OS')
+
+helpline='<Arrows> between elments  |  <Space> selects  |  <F12> Confirm'
+
+screen.pushHelpLine(helpline)
+
+inst_mod_items = {'Manual install text mode':'Text', 'Auto install':'Auto', 'State Grid automated install':'StateGrid'}
+
+inst_mod_num = len(inst_mod_items)
+
+inst_mod_listbox = Listbox(inst_mod_num+2, width = 40, returnExit = 0)
+
+#for i in range(inst_mod_num):
+for i in inst_mod_items.keys():
+    inst_mod_listbox.append(i,inst_mod_items[i])
+
+tex = TextboxReflowed(40, "Please choose one install mode from the list blow \nand press 'F12' to confirm.")
+
+g = GridForm(screen, "Install Mode Select", 1, 3)
+
+g.add(tex, 0, 0)
+g.add(Label(""), 0, 1)
+g.add(inst_mod_listbox, 0, 2)
+
+g.runOnce()
+
+screen.popWindow()
+
+screen.finish()
+
+instmode =  str(inst_mod_listbox.current())
+
+os.system('echo %s >/tmp/xrasmxioecnz' %(instmode))