I have installed Mandrake Linux using defaults suggested by the installer. Now I have one user 'denis', which is logged in automatically at startup.

There were also two partitions created on my hard drive: '/' and '/home'. I would like to resize '/home' - create two partitions instead of one. According to Help this operation requires all users to be logged out except 'root'. However, if I log out 'denis' then I am presented with a log on window, which only has one user in it - 'denis'. So, how do I log in as 'root' without firstly logging in as 'denis'?

Thank you.

There's a squillion ways to skin a cat..but the direct answer to your question is:

There's a tab called Login Manager under the System Administration in the KDE Control Centre.

Click the Convenience tab, and turn off Auto Login. You will then be able to login as root.

L
EDIT: As the next post indicates, you will also have to unhide root...sorry..forgot about that.

You'll have to enable root at the login screen. I'm not in Mandrake right now, but I think it's something like Star->System->KDE->Login Manager , and you will be presented with a screen that shows all the users on the system. Next to "root" uncheck the "hide user" button and restart KDE and you will be presented with "denis" and "root" at login.

way a squillion and two is:
choose "logout", then "end session"
CTRL-ALT-F2(opens terminal, CTRL-ALT-F7 would get you back to gui at this point)
login as root at prompt
then type command "startx" (restarts display manager now that you are logged in as root)

If you were doing something such as installing nvidea driver, you could add {type command "service dm stop" (shuts down xserver or display manager)}
after logging in as root and you then have xserver shut down and logged in as root ready to install nvidia driver,

Just another way of doing same thing without unhiding root graphical login.