Strange that you cannot recall it asking for a root password. Any way, to temporarily login as root from a terminal then you can do the following:
[user@server dir]$ su
then enter the password that you set (or think you could of set
or you can do this from the terminal (not
recommended as you could end up trashing your system by logging in as root, you just have too
[user@server dir]$ logout
after doing this you will be presented with a login prompt.
Hope that helps