Unable to delete a partition or logical DOS drive using FDISK

When you attempt to remove a partition using the FDISK utility that is included with Microsoft Windows 95, Windows 98, Windows 98 Second Edition, or Windows Me, you may receive the 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 error message “No Logical Drives defined“.
This behavior occurs if the extended DOS partition is an NTFS partition. This behavior can also occur if the partition has been created with a third-party operating system such as BeOS, Linux, or versions of UNIX.

To remove this partition, use SeaTools for DOS’ 0-fill option.

Note: 0-filling a drive is data destructive. All data will be lost.