can't connect after a pam.conf modification

Hi all,

Well, I was trying to resolve a VAS issue by modifying my pam.conf on a solaris 8 V210 server. I made a back-up of the pam.conf file.
But when I try to connect now, no connection is available.
I can go on the console through a hyperterminal connection, but the login does not work on it.
"console login: root" and I can't enter the password.
Is there a way to reboot only on console and that I be able to cp the old pam.conf file to the original state.

Thank you

Run Levels (System Administration Guide, Volume 1) - Sun Microsystems
Boot into runlevel 1.

Thanks a lot,

I forget the boot -s option.
it is working great now.