removing autorun from a flash drive

[Bruno Wolff III]

On Tue, Mar 10, 2009 at 17:47:04 -0400,
  Todd Denniston <Todd.Denniston at ssa.crane.navy.mil> wrote:
> Bruno Wolff III wrote, On 03/10/2009 05:34 PM:
>>
>> Repartitioning the raw device would probably work. You would then create
>> a filesystem on the partition.
>>
>
> No, if you repartition the device, you wipe out the ability for the U3 
> removal tool to work, but the fake CD remains IIRC.

Maybe I am missing something. If you write over the blocks with the U3
tool, how does it not get erased?

Is this tool located somewhere of than the normal blocks on the device?