[indiana-discuss] How to boot in failsafe mode?

[ludo]

Hi,
Here is my situation:
Indiana installed on Ultra 40 M2. Nice.
Then I tried to setup NIS. But some reason, the system does not restart 
anymore:
keep getting many

pigalle console login:

messages but when I enter root or ludo, nothing.  (I guess the system is 
not looking for local users)
Then continuous error message:
svc.startd[7]: svc:/application/graphical-login/gdm:default: method or 
service exit timed out. Killig contract 51.
Method "usr/sbin/gdm" failed due to signal KILL

then transitioned to maintenance...

Then whatever I type: nothing...
I cannot enter a login name or a password, nothing.

So I need to either boot in failsafe mode, or booting using the liveCD I 
need to mount the Ultra 40 disk...
But from the live CD, I do not find a way to mount the hardrive... with 
the usual
mount /dev/dsk/c4t0d0s0  /tmp/mnt

How do I mount this drive from the LiveCD boot?
Thanks for the help,
Ludo