OK, you need a Linux based system to do so.
Without the Memory stick being plugged in,use the command [code]lsblk[/code].
Now plug in the usb Memory stick
Use [code]lsblk[/code], the “new” device name should be easy to spot
flaten the content of the Memory stick by using [code]mkfs.ext2 /dev/sdX[/code], where sdX is the device name you found with lsblk