Get a Windows 98 startup boot disk from
http://www.bootdisk.com/ You
have to download the bootdisk file to your hard drive then create the
floppy diskette, just execute the file that you downloaded and it will
guide you.
Boot the computer with the startup diskette. You might have to go in
the computer BIOS and set the boot order so that the diskette is first
on the list. Once booted with with the diskette run fdisk and
delete the partition(s). After you delete the partition(s) create a new
one. Reboot the computer and format the drive.
How to Use the Fdisk Tool and the Format Tool to Partition or
Repartition a Hard Disk
http://support.microsoft.com/kb/255867/
If you find that you can't delete the NTFS partition and get caught in
the "logical drive" loop download delpart.exe and use it to delete the
partition. You use delpart at the same stage as fdisk, after you boot
with the startup diskette above you use it instead of fdisk. If there
is enough room on the floppy diskette you can put it on the same startup
floppy, if not copy it to a different diskette so that you can use it
while booted to DOS. Delpart is available here:
http://www.russelltexas.com/delpart.htm
John