Warning was not properly dismounted/

[larry_nilsen <larry_nilsen@xxxxxxx>]

hi i have two short Questions;
1) im running FREEBSD2.2.7 I  have a root password.Now how do i sign in
as
root or when im logged in as normal user how can i access root. a lot of

commands i try keeps comming back permission denied?
2)When im in FREEBSD and i want to shutdown my computer i understand
i should be using the shutdown command.When i use it it comes back
saying
permission denied.? and then i just type exit it puts me back in the
login
screen and i turn off the computer there.When i turn on the computer
again
as FREEBSD is booting up and going through the normal kernel i read
somthing that says" (Warning was not properly dismounted) How can i
prevent
this error from happening again.
                                                         thankYou! in
advance



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