A friend has brought me their pc with a new hardrive they attempted to format, but managed to infect it with a NYB boot virus. I have used the fdisk utility before and have set DOS partitions and installed DOS operating systems before. I cannot manage to get past the warning stating "remove disk now to avoid infection of boot virus. Also, which version of DOS should I try to install should I resolve the virus problem. Where can I download the complete installation disks for DOS? Any advice is greatly appreciated. Thanks!