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DEC UNIX 4 hacking for Root Access

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  by Bill Degnan - 10/28/2017 12:48
DEC UNIX CDE Desktop
The DEC UNIX CDE Desktop. Click image for larger view.


I was able to change the DEC UNIX 4 root password as follows:

>>> b dka0 [enter]

# mount -u /
# mount /usr
# passwd
(enter new password 2X. )

HINT: Use a complex password with Upper/Lower/special chars/numbers in the event the system requires complex passwords. Even if you can change the password X Windows might not let you in. I found that in this systems' case the OK button is be greyed out when the password stored in the passwd file does not conform to the rules.

Restart your system.

--------------------

In this particular Multia running DEC UNIX 4 here is what I have to do to get into the DEC GUI known as the Common Desktop Environment (CDE), EXACTLY, from a cold boot (assume you hit enter after each line):

>>> b dka0

# init 3

This initiates the startup script for single user CDE session. Because I am not connected to anything and the system has not been configured the system freezes trying to connect to the network for an update (watch for when the line "Update: started" prints on the screen). To bypass I hit CTRL+C.

Once the startup script finishes the system asks me to log in. Upon successful login I am greeted with a # prompt again.

To enter the CDE I enter these commands:

# ./xlogin stop
# ./xlogin start

(why I can't use restart I don't know)

Finally, I get to the CDE GUI login screen prompts.

NOTE: If you have issues check /etc/securettys for lines that contain references to :0 in them (meaning root display ":0" can login locally).

Useful page:
http://bhami.com/rosetta.html

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