V9.2.1 to 10.2.1 active/passive

Nitas unit is not using appliance mode , I have checked License screen in the Configuration utility , please see below I have reset root password & updated successfully. but when I reboot or exit that terminal it wont take changed password

 

 

logname: no login name

 

sh-3.2 mount -a

 

sh-3.2 passwd root

 

Changing password for user root.

 

New BIG-IP password:

 

Retype new BIG-IP password:

 

Changing password for user root.

 

passwd: all authentication tokens updated successfully.

 

sh-3.2

 

 

Abcuk.com login: root

 

Password:

 

 

Authentication

 

BIG-IP 10.2.2 Build 763.3

 

Kernel 2.6.18-164.11.1.el5.1.0.f5app on an i686

 

 

How can I do again clean installation ? as not able to login root account ?

 

Any thoughts ?

 

 

Thanks