Originally Posted by WuZp
how to delete the partition? can teach by step.
1. Boot from a Linux Live CD, open a terminal, and run fdisk or cfdisk or maybe parted or gparted.
2. Get the Gparted standalone bootable CD:
3. Use a commercial tool like Partition Magic.
Did you try booting up from the Windows install disk? Perhaps you do not need to delete any partitions first....