>>   i had netbsd 1.4.2 and 1.5 installed and i want disable single-user login
>> when boot the server use boot -s.i search lots of Documents and had no answer
>> maybe someone can hel me?
>
>Just mark the console as "secure" in /etc/ttys.

um...i think you mean "insecure".  that causes init to ask for a
password before saying

    Enter pathname of shell or RETURN for sh:

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