Can not move directory within FAT32 file-system

[ronggui]

Hello, all.

I am new to FreeBSD. I got my first question with FAT32 file-system.
It seems quite strange. I install FreeBSD 6.2 in my asus notebook.
When I mount windows file system, I cannot move directory even if  as
root.

mount_msdosfs /dev/ad0s6 /mnt
mkdir /mnt/1
mkdir /mnt2
mv /mnt/1 /mnt/2

The last step will complain " not a directory". But the same steps
work in my old pc. Thanks very much.

-- 
Ronggui Huang
Department of Sociology
Fudan University, Shanghai, China