Ok thanks, I added the following line in my fstab file :
UUID=E529-1273 /media/Data vfat rw,user,auto,exec,gid=1000,uid=1000,umask=007,iocharset=utf8,codepage=850,shortname=mixed 0 0
As you can see, the partition is mounted in /media/Data
I hope it's ok, I'll try tomorrow.
I prefer keep only one partition for all my data if possible..