How to Disable Root?

[John]

Dave Miller wrote:
> Brett Kirksey wrote:
> 
>> As mentioned in a previous post, I was forced to enable root in order 
>> to get Webmin installed. How to I get root disabled now? In OS X, 
>> there is just an option to do this and I believe it accomplishes this 
>> by giving root an ivalid password.
>>
>> Anyway, how do you disable root in Ubuntu?
> 
> 
> $ sudo passwd -l root
> 
> The "-l" is "lock user account"


There should be something in user administration (Ubuntu or Webmin) for 
that.