In your original post you stated:

"1) Format my hard drive clean and"

.. If there it detects an operating system on C, you have not formatted the C
drive


> but there is another operating system already installed
> it says
> so should i go ahead with that and will it be safe ?


You *can* go ahead and install but this is not a "clean" install. It's more
of a reinstall. A reinstall may or may not fix the problems that caused you
to try to install the Operating system again.

If you boot from the XP CD (Put the XP CD in and re start and choose "boot
from CD" when presented) you will be able to format the C partition (removes
the existing Operating system) and install XP on the C drive without
encountering the error about "another Operating system is already
installed."

hth
DDS W 2k MVP MCSE

"hasnain mir mohammed" <hasnainmirmohammed@discussions.microsoft.com> wrote
in message news:EB6742B4-6BB6-456B-B8C0-A59F7BA2703D@microsoft.com...
>
>
> "Danny Sanders" wrote:
>
>> You need to boot from the CD and start setup. It will then give you the
>> choice to delete - recreate then format the partitions before installing.
>>
>> Make sure you have the necessary drivers to get you on the Internet again
>> so
>> if you need to download drivers you can.
>>
>> hth
>> DDS W 2k MVP MCSE
>>
>> "hasnain mir mohammed" <hasnainmirmohammed@discussions.microsoft.com>
>> wrote
>> in message news:6B585E73-AB5B-44BC-93E1-791E8DBB325E@microsoft.com...
>> > i have a dell dimension 1100, iam trying to install windows xp home for
>> > the
>> > first time.
>> > I am already running windows xp home.
>> > I want to :-
>> > 1) Format my hard drive clean and
>> > 2) Re install windows xp from my dell operating system cd.
>> >
>> > I inserted the cd
>> > and was going well ..but til
>> > it was asking me which partition to install the operating system in.
>> > i click on c: (c drive) and it said that this partition already has a
>> > operating system and if i press enter then it will continue.
>> > I wanted to know if it is safe to go ahead with that.
>> > If there is anything else then please tell me because iam having severe
>> > problems with my computer .
>> > Please reply
>> > asap
>> > cheers
>>
>
>
>
>
>
>
>
>
>
> ok mate..
> as u said i have to choose a partition ,
> i have three options and i want to install xp in c drive
> but there is another operating system already installed
> it says
> so should i go ahead with that and will it be safe ?
>
>>