Q. How to boot system in emergency mode in Solaris.

A. Let me tech you how to boot system in emergency mode.
Start the system & boot from Solaris Disk1 or Solaris DVD

To boot the system from CD-ROM [break the single = Windows Key (Ctrl+Pause Break)] & go to “OK” prompt.

>Ok boot cdrom -s

Once you have logged in to machine type the below mentioned commands.

# mount /dev/dsk/c1t1d0s0 /a
# cd /a
# TERM=vt100; export TERM
# cd /
# umount /a
# init 6