No need to format before you install an OS. The installer can do that quite well. Just find your Windows 8 install disk and the license code and go ahead.
If, for some reason this scheme won't work, please tell why.
Huge Problem? How can I reformat my drive to re-install a fresh copy of Win 8 if the file win.old and any related files are missing? Is a NTFS formatting software available to accomplish this and if so, what is it and where can I get it?