Problem with root login

Hi,
we have instaled Solaris 10 on a SUN V490, installation went okay but now when I type �root� and press return it comes back with the �Login incorrect� without ever asking for a password...

Did you i stall the O/S via the serial console?

Are you now trying to login via the serial console?

Did you set a root password or did you leave it null?

yes, root password is set,

I try to login via Console connection,
even normal connection via telnet or ssh for any user it not working

Also, keep in mind that root login is disabled via SSH in a standard configuration. You have to change the ssh settings if you want to enable ssh connectivity for the root account.

So what console serial terminal are you using? Is it a PC based terminal emulator? If so, what? Is it set 9600,8,N,1?

Have you done or edited ANYTHING since the install routine was done?
e.g. edited /etc/passwd file?

Can you try to login with a normal user ( if created ) from console ? and then su - root.

Yes, but I asked the OP whether /etc/passwd had been changed in any way.

Messing up the format (eg, unprintable characters inserted) can cause this kind of thing. For example, just inserting a blank line at the beginning of the file will stuff all logins. Root user must be on the first line.

Still awaiting an answer to my post.