can someone help me formatting my usb stick

[blackoutfh]

blackout@roman:~$ sudo fdisk -l
[sudo] password for blackout:

Disk /dev/sda: 60.0 GB, 60022480896 bytes
255 heads, 63 sectors/track, 7297 cylinders, total 117231408 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000390c6

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 117229567 58613760 83 Linux

Disk /dev/mmcblk0: 7964 MB, 7964983296 bytes
4 heads, 16 sectors/track, 243072 cylinders, total 15556608 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000a9b03

Device Boot Start End Blocks Id System
/dev/mmcblk0p1 16 15556607 7778296 83 Linux



Bus 002 Device 016: ID 13fe:5000 Kingston Technology Company Inc.

with sudo dd if=/dev/zero of=/dev/sdb1
it writes me only 3gb of 16gb

with this 3gb

cfdisk (util-linux 2.20.1)

Disk Drive: /dev/sdb1
Size: 3111960576 bytes, 3111 MB
Heads: 87 Sectors per Track: 60 Cylinders: 1164

Name Flags Part Type FS Type [Label] Size (MB)
------------------------------------------------------------------------------
sdb1p1 Boot, NC Primary Linux 3111.97*



dmesg
[ 8106.348120] usb 2-1.2: USB disconnect, device number 16
[ 8108.594237] usb 2-1.2: new high-speed USB device number 17 using ehci_hcd
[ 8109.077058] scsi16 : usb-storage 2-1.2:1.0


blackout@roman:~$ sudo mount /dev/sdb1 /media/sh
mount: you must specify the filesystem type


but there is no way to format the disk or use it in any way

some ideas??

with windows it can not be low level formatted because it's recognized as not connected