[n-b-d123]

Hi I'm not sure if this will help anyone but

I was trying to work out how to delete the partition on my usb flash drive so I could use Roadkil's DiskImage to write a freenas embeded image on it

I found that windows XP or Win7 disk manager would not allow me to delete the existing partition.

The following worked

run command prompt - cmd.exe as administrator (elevated)
type the following commands
diskpart
list volume (this will show you all your volumes and their corresponding number)
select volume <number> of your usb stick example select volume 3
clean
exit


now you will be able to partition your usb stick :-P or write cool images to it with out errors.

note I have had some images that will overwrite what ever is on the usb stick but some will not