hi i have problem at my BIOS where i have installed ubuntu so when it started it asking Grub.the dri

I have tried to install ubuntu server version 11.04 and it was installed in a D: drive the partition which i have installed has been missing but is in healthy partion.Before i opened my system by using windows then in windows it gave me pop to format the drive to open it
where in that drive i have kept windows sever also init.so please how to remove all thing from my laptop and make it as single O.S
I had no time plzzz As soon as possible.

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