BIG-IP LTM 1500 does not boot !!! please help

hi,

 

I have got a problem with my BIG-IP 1500 system.

 

the BIG-IP was working fine with v9.3.1 and

 

I was doing a version downgrade to BIGIP V.9.1.2 (clean install ) , when the BIG-IP exited the installation process and came back to the shell prompt.

 

i rebooted the system from that prompt but the BIG-IP would not boot anymore to the pre-installed OS.

 

I get the below error message on the console :

 

 

--------------MESSAGE BEGINS HERE---------------

 

System is booting, please wait...

 

Press Ctrl-c to stop autoboot: 5 4 3 2 1 0

 

kernel.core_uses_pid = 0

 

kernel.core_pattern = /var/core/%e.sccp.core

 

 

Host Console Shell --- Press ( for command menu.

 

 

-------------MESSAGE BEGINS END ------------------

 

 

The BIG-IP system stops at the above message and when I press "( " as displayed on the console,

 

I get the below command menu :

 

 

-----------MENU STARTS HERE---------------

 

[hostconsh] Command Menu:

 

 

1 --- Connect to Host subsystem console

 

2 --- Select Host subsystem boot mode: boot from local drive

 

3 --- Select Host subsystem boot mode: netboot manufacturing test

 

4 --- Select Host subsystem boot mode: netboot from external server

 

5 --- Reboot Host subsystem (sends reboot command)

 

6 --- Halt Host subsystem (sends halt command)

 

7 --- Reset Host subsystem (issues hardware reset--USE WITH CARE!)

 

8 --- Reboot SCCP subsystem (issues hardware reset--USE WITH CARE!)

 

9 --- Halt SCCP subsystem (issues hardware shutdown--USE WITH CARE!)

 

D --- Run Diagnostics

 

I --- Run BIG-IP Installer (issues hardware reset--USE WITH CARE!)

 

B --- SCCP baud rate configurator

 

L --- SCCP login

 

N --- SCCP network configurator

 

 

---------------MENU ENDS HERE------------------

 

 

But I don't know how to boot the BIG-IP from the above command menu.

 

have you ever had this kind of problem before ?

 

Please advise.

 

 

Thank you in advance.

 

 

Sakolan