Messed up usb key

[bluesmanu]

Hi all,

it seems I screwed up my usb key while trying to make it bootable. I think i copied a .img file to /dev/sdb instead of /dev/sdb1 and now I cannot access or format the key.
When I plug it in I get

[  129.088311] usb 2-3: new high speed USB device using ehci_hcd and address 3
[  129.221235] usb 2-3: configuration #1 chosen from 1 choice
[  129.324495] Initializing USB Mass Storage driver...
[  129.325056] scsi6 : SCSI emulation for USB Mass Storage devices
[  129.325448] usbcore: registered new interface driver usb-storage
[  129.325452] USB Mass Storage support registered.
[  129.325454] usb-storage: device found at 3
[  129.325456] usb-storage: waiting for device to settle before scanning
[  134.325717] usb-storage: device scan complete
[  134.326425] scsi 6:0:0:0: Direct-Access     USBest   USB2FlashStorage 0.00 PQ: 0 ANSI: 2
[  134.327266] sd 6:0:0:0: Attached scsi generic sg2 type 0
[  134.328820] sd 6:0:0:0: [sdb] Attached SCSI removable disk

The disk used to be recognized as "Ut165 USB2FlashStorage" and now it's "USBest USB2FlashStorage"

Here's also what i get :

[root]$ fdisk /dev/sdb
Unable to open /dev/sdb
[root]$ sfdisk /dev/sdb
/dev/sdb: No medium found
sfdisk: cannot open /dev/sdb read-write

Please help!
Thx!

[RobinVossen]

umm, I am not 100% sure so use this as a last recoil... NULL your device.. everything will be done..

dd if=/dev/null of=/dev/sdb

Hope you find a better solution.. and otherwise that I have been usefull