formating a disk

[Albert Shih]

Hi all

I've strange problem with a external disk (firewire). I don't know how I
can format it.

I've already format this disk (on my FreeBSD box with newfs), after that I
re­format this disk with Windows XP (maybe bad idea ;-) ) and now I cannot
format the disk with anything

When I try fdisk 

[root at freebsd1 rc.d]# fdisk -BI da0
******* Working on device /dev/da0 *******
fdisk: invalid fdisk partition table found
fdisk: Geom not found
[root at freebsd1 rc.d]# 

If I try to use sysinstall I can make a slice, but when I want to format
the disk I go a error.

If I try to format directly (without slice) it's working but I cannot mount
the disk.

Anyone can help me ?

NB: The disk work..because I reformat it under windows XP.
--
Albert SHIH
Universite de Paris 7 (Denis DIDEROT)
U.F.R. de Mathematiques.
Heure local/Local time:
Fri Mar 31 01:28:14 CEST 2006