USB key with 7.5 GByte but no space left on device after 4 GByte written

[Charles Oppermann]

> > 08:48:33 rebelion kernel: da0 at umass-sim0 bus 0 target 0 lun 0 Mar  5
> > 08:48:33 rebelion kernel: da0: <Ut165 USB2FlashStorage 0.00> Removable
> > Direct Access SCSI-2 device Mar  5 08:48:33 rebelion kernel: da0:
> > 40.000MB/s transfers
> > Mar  5 08:48:33 rebelion kernel: da0: 7712MB (15794176 512 byte sectors:
> > 255H 63S/T 983C) Mar  5 08:48:35 rebelion kernel: GEOM_LABEL: Label for
> > provider da0 is msdosfs/pen disk.
> > # mount -t msdosfs /dev/da0 /mnt
>
> msdosfs bug or strangely made msdos filesystem on that pendrive.
> if you use it FreeBSD only, clear first 4kB with dd, then do newfs and
> use as UFS
> if not - use newfs_msdos

Wouldn't it be /dev/da0s1?  Is it possible that the drive hasn't been 
formatted properly?