error mounting USB disk: Invalid argument

Colin Brace cb at
Sat May 31 08:27:53 UTC 2008

On Sat, 31 May 2008 09:29:55 +0200, Roland Smith <rsmith at> wrote:

> Can you show us what is shown in the dmesg output when you plug this
> drive in, which devices are then created and the exact command that you
> used to mount it?


umass0:  on uhub1
da0 at umass-sim0 bus 0 target 0 lun 0
da0:  Fixed Direct Access SCSI-2 device 
da0: 1.000MB/s transfers
da0: 194481MB (398297088 512 byte sectors: 255H 63S/T 24792C)

These nodes are created:

# ls -1 /dev/da*


# mount /dev/da0s1c /media/disk6
mount: /dev/da0s1c : Invalid argument

# mount -t ufs /dev/da0s1c /media/disk6
mount: /dev/da0s1c : Invalid argument


  Colin Brace

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