???
I do not understand what do you mean when you wrote : ?install windows on the same hd but in a differn't directory?
Are you trying to say that you wanted to install Windows in the same hard drive but different partition?
If you install Windows in different partition then fresh installation Windows will apply to the partition that you instructed Windows to install during installation process.
You did not format / deleted anything on other partition, then there is nothing change on that partition, all data on that partition is still there until you deleted it.
take care