[Simh] Getting started with RSTS - unknown password

[Peter Allan]

While I have been playing with running VMS on simulated VAXen, and RT-11
and RSX-11M(+) on simulated PDP11s for many years, I have never tried RSTS
on a PDP11 - until now.

I have found installation tapes on rsts.org, but I also have a pre-built
system that I downloaded in January 2018 that I was hoping to start with. I
can't recall where I got it from.

The file name that I downloaded is RSTS_V10.1.zip and the contents of the
zip file are:
  RQDiskV10_1.DSK
  rsts_1193.ini

The DSK file is 155MB in size, so I presume it is a simulated RD54.

I can boot the system using the simh pdp11.exe executable on Windows 10 (I
normally use CentOS rather than Windows for this type of work) and it
appears to run successfully. HOWEVER, I can't log in as I have no
information on a username/password combination. I have guessed a few
possible passwords (including no password) for the [1,2] account, but to no
avail.

Does anyone recognise the system that I have described to the extent that
you might be able to help me use it?

Also, does anyone know how to get into a RSTS system when you have
forgotten the system password? Is this even possible? I know how to do it
on VMS, but RSTS is completely new to me.

Thanks in advance.

Peter Allan
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