Ubuntu - reset root password

Hi

I have 'inherited' a linux machine and need to reset the root password. I tried restarting in recovery mode and dropping to a root shell prompt as advised on various websites but then got
Give root password for maintenance shell (or type Control-D to continue):

I don't know where to go from here as I'm a novice really. I have seen this page but don't know how to follow it

http://www.uluga.ubuntuforums.org/showthread.php?t=1433097

I tried starting again in recovery mode and pressing e to edit it but this just gave me an screen with some output on it and th option for a command prompt which just takes you to a  grub command prompt .

I don't know what to do :)
thanks a lot
andiejeAsked:
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Wilder_AdminConnect With a Mentor Commented:
the only really working is to boot from cd linux distribution like ubuntu or knoppix. Then search the /etc/shadow file and delete all behind root.
then you should reboot and you can enter with root again without password.

If this is not working then boot again from the linux distribution and enter the file /etc/group and give a different user then root the root rights for example the www-data user of apache and log in with.

If this is not working and you dont have local access to machine then you are srewed.
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alpharomCommented:
if you have a ubuntu cd-rom you can run it from the configuration in a graphical mode
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sagiamarCommented:
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andiejeAuthor Commented:
i don't have a cd rom.
Here is what i get
linux.jpg
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andiejeAuthor Commented:
what do you mean by don't have local access?

I am running linux as a virtual machine. It is someone else's VM and I can't get it to load.

I actually get these errors when I try and log on as the user I have the password for:


Could not update ICEauthority file home/mkhweb/.ICEauthority

I click the only option, cancel and then get this error

There is a problem with the configuration server (/usr/lib/libgconf2-4/conf-sanity-check exited with status 256

So i can't log on at all. All the fixes for the above solution require dropping to a root shell and I can't do that!!!
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andiejeAuthor Commented:
I probably have the original linux iso file if that helps
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andiejeAuthor Commented:
thanks
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