USb disk add

hi i have problems add usb disk my ovh server with ubuntu destokp 8.04

and gives me this error :

http://i42.tinypic.com/2psir2r.jpg any idea ???

Mount it via the command-line: http://mattiasgeniar.be/linux/how-to...nd-line-linux/

To identify disks, you can use: sudo fdisk -l