Just got a solaris 8 blade 150 box with no users, only a root account. no one seems to know the password. I'd like to add one user. So I booted into single user mode via cdrom and added one. Can't seem to login using the new account, though. Here's what I'm using:

# useradd -d /tmp/"user" -m -s /bin/sh

password?

Try just hitting return when it ask for a password on root account.

Attempting to add a user won't work while booted off the cd. Instead, mount the boot drive onto /mnt and then edit /mnt/etc/shadow to remove any root password. Then you should be able to boot from the disks and get in. Then add new accounts.