Partition Zapper
Deletes Hard Disk Drive Partitions When FDISK Won't

Partition Zapper is a free program that solves the infamous "Partitions exist but they don't exist" problem caused by Microsoft FDISK. This problem is well documented in Microsoft Knowledge Base Article 261473:

When you attempt to remove a partition using the Fdisk utility that is included with Microsoft Windows 95, Microsoft Windows 98, Microsoft Windows 98 Second Edition, or Microsoft Windows Millennium Edition (Me), you may receive the following error message:
Cannot delete Extended DOS Partition while logical drives exist

However, when you attempt to remove a logical drive in the extended DOS partition from within the Fdisk utility, you may receive the following error message:
No Logical Drives defined

Partition Zapper removes all partitions from a PC hard drive, regardless of the operating system, utility, or virus that created them. This easy-to-use program can be run from a command prompt after booting from a boot floppy or system startup diskette (see screenshot). After deleting partitions using Partition Zapper, new partitions may be created using Microsoft FDISK, in preparation for installing a new operating system on the drive.

Note: Partition Zapper will not remedy the FDISK error, "Error reading fixed disk". This error is usually caused by a hardware problem, such as an incorrect jumper, misconnected cable, etc.

Instructions:
1)
Download PZAPPER.EXE (16 KB).
2) Copy pzapper.exe to a floppy disk.
3) Boot the PC using a bootable diskette.
4) After PC has booted, replace the bootable diskette with the diskette containing pzapper.exe.
5) At the DOS prompt, type A:\pzapper.exe and press enter.
6) Pzapper will guide you through the rest of the process. Follow the onscreen instructions.