you can just hit ^c as it is booting up, right after the kernel loads, as 
init starts and begins rc, hit ^c a few times, and it will drop you to a 
single user shell. 

On Tue, 28 May 2002, Douglas Meade wrote:

> 
> I just got today a Microvax 3300.  It has 12 Mb RAM, 
> 1 RF30 (143 Mb) disk, and Ultrix 4.2 installed.  Is 
> there a way to boot this kitty into single user mode
> and change the root passwd?
> 
> Doug
> 
> 
>