How do I delete all partitions on USB in Windows 7?

partitioning usb windows-7 truecrypt 
DISKPART
list disk

view USB disk number and type number in select disk

select disk 1

all partition delete in disk 1:

clean

Related

Changing default directory structure
How to change the icon (apply a thumb) of a folder on Mac OS X?
crypt32.dll is broken for Virtualbox since patch Tuesday 9-Dec-2014?
USB flash drive autorun
How to access my Home PC from the office?
Using Apps on non-iOS devices?
Is a clean install really better than an upgrade?
Convert MBR to GPT - Without any OS
Moving VMware OS image as primary OS on a system
How to change from Public network to Private network
How to identify drive device from event log?
Where are cookies of Firefox stored in windows?