So I managed to access this usb hard drive by issuing the following
commands :

mbrlabel -w sd0

#to merge the partitions in the bsd disklabel
#then I could see the msdos partition with

disklabel sd0

# and i mounted with

mount_msdos /dev/sd0a /data

Works great.
Thank you





>On Thu, Feb 03, 2005 at 06:37:34PM +0100, Manu Ka wrote:
>> Unfortunately I cannot acces the usb hard disk, when I try "disklabel
>> sd0", I'm unable to find the letter label to mount the fat partition there
> >is on it.

>I think you want to run "mbrlabel" on that drive, to merge the fdisk
>partitions into the in-core disklabel. I've never tried that (on sparc64),
>but if it doesn't work, that would be a bug.