I am taking off Vista and putting on Win 7. In the install set it asks to delete the partitions which I want to do because I want to erase everything. I have three partitions. Should I format the partition that I am installing on afterwards or will deleting it do the formatting? After I delete and it creates a small partition then it starts installing files. I am thinking that I should format the partition that Windows should be on first. Is this a step that I don't need to do?