Solaris

at the ok prompt type "boot cdrom"

...to single user mode:

Code:

boot cdrom -s

o yea... haha

Just avoids having to exit from the installation program.

Start by inserting the Solaris installation CD-ROM and then halt the system. Press...
Stop-A

This will bring you the OK prompt. Now type:
boot cdrom -s

and after a few minutes you will automatically be logged in as root in single user mode. It is possible that you get messages from your system claiming that some partitions were not cleanly unmounted. If this is the case check the partition as follows (assuming that your root partition is mounted on /dev/dsk/c0t0d0s0):

fsck -y /dev/dsk/c0t0d0s0
Now mount your root partition...
mount /dev/dsk/c0t0d0s0 /a
and edit /a/etc/shadow. Find root's entry in this file and remove the second field (encrypted root password) so it looks like...

root::84624::::::

After making your change, save the file and reboot the system.
reboot
You are now able to log into the system without a password for root. So now use the passwd command to set root's password.