Not sure if I understand the problem correctly, but are you trying to copy the ntldr file to your c drive from a dos prompt? It sounds to be like your C: drive might be formated with a NTFS partition, which DOS cannot read without help. Maybe you could boot into windows xp the way you have been, and try to copy the files from your bootdisk to your C: partition from there? From within Windows XP. Just guessing.