FDISK Write error

I have a system that I need to wipe the hard drive on.  I would  have thought a simple fdisk would work, but it doesn't.  It gives a "write error"  How do I get around this?  

Current configuration is:
1:    NTFS
2:    LOGICAL
       C:   PAGE FILE

I go to extended, delete the PAGE FILE, it says deleted.  I then go to delete logical, and depending on the time, either says can not delete if logical disk exists, or says deleted.  Then deleted Non-DOS disk, for the NTFS, everything says ok.

Go to Create a Primary partition and gives a write error.  Go to Display and everything is as above.

Any suggestions?

Thanks!
Kit