About Harddisk Problem. I have a harddisk of Samsung with 40GB of memory space. I have found some

Question

I have a harddisk of Samsung with 40GB of memory space. I have found some problem on it. I formate the harddisk with the help of Disk manager and create four drives on it. When i am going to install the operating system, I found that My C dirive have some problem then I prefer to install the operating system on d drive. My d drive did not show any problem but the operating system does not get installed. When I am going to contact my vendor he told me that the boot sector of your harddisk has been damaged and it is recovered by NDD software. I want to know about the NDD software and from where I can download it.