I think we all have enough experience to know that.

>from a KNOWN UNINFECTED COMPUTER:
>
>>1. Format a floppy and make it bootable.
>>2. Copy FDISK to the floppy.
>
>on the INFECTED COMPUTER
>
>>3. boot the computer from the floppy.
>>4. Run FDISK /MBR six or seven times in quick succession, then remove the floppy and boot from the HDD.