On Wed, 9 Oct 2019, Paul Koning wrote:
On Oct 9, 2019, at 4:24 PM, Peter Allan <petermal...@gmail.com> wrote:
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
...
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.
Boot the system and start the OS. Sufficiently recent versions will prompt "Proceed with
system startup?". Answer NO. You'll be dropped into the DCL prompt, and you're logged in as
user [1,2] with all privileges. You can now change the passwords to be whatever you want. Use the
"set password" command to change the [1,2] password, or supply the account id -- like
[42,17] as the argument on that command to set some other account's password.
No, you can't read the passwords, they are hashed.
For older versions (V8 and before) the story is different. There the passwords ARE readable.
Older versions don't have a "Proceed" prompt, they typically go right into the startup
sequence without asking, after you do the "START" operation in INIT. But it works by
simulating keyboard input to the console terminal, and you can disrupt that by leaning on the
control-C key during the process. It may take a few tries.
Once you're in, RUN $MONEY and in the dialog, tell it you want passwords
printed.
Curiously, those old systems don't have a password change utility, though there
does exist a syscall to perform that operation.
I should add support for these things to my "FLX" utility (a tool for
manipulating RSTS disk images) but right now that isn't provided.
paul
The version 9 (and above) systems also recognize "REAL" passwords, case
sensitive. Paul is correct about the V8 and below passwords, which if
I recall correctly, are stored (just like filenames) in RAD50 format.
So 6 characters is all you are going to get in V8 and below.
I think "IIRC" there is an option in $MONEY to reset passwords which
would only be available to a [1,*] user. But it was kind of odd there
was never an option for the owner to change their own password.
Brett
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