How to create a RAID1 linux partition from existing FAT32 partitions Windows partition

[JFW <trash@tele2.be>]

Dear debian-users,

I have installed Debian successfully from the debian-installer RC2 on
a raid1 system where WinXp and a FAT32 partition were priviously
installed also in RAID1.

I would like to use the FAT32 partition to exchange files between
WinXp and Debian.

In can mount one of the two (because of raid) fat32 partition but I
was wondering if defining those two fat3é partition as a raid1
partition under Debian doesn't make more sence.

My question: can I do it without loding data already on the FAT32 and
how can I do it ?

Some dumps to understand my system:

fdisk -l output):

Disk /dev/sda: 163.9 GB, 163928604672 bytes
255 heads, 63 sectors/track, 19929 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        3834    30796573+   7  HPFS/NTFS               --> Existing WindowsXp prior Debian install
/dev/sda2            6963       19929   104157427+   f  W95 Ext'd (LBA)
/dev/sda3            3835        6962    25125660   fd  Linux raid autodetect
/dev/sda5            7100       19929   103056943+   b  W95 FAT32               --> Existing FAT32 Partition for data XinXp
/dev/sda6            6963        7099     1100389+  fd  Linux raid autodetect

Partition table entries are not in disk order

Disk /dev/sdb: 163.9 GB, 163928604672 bytes
255 heads, 63 sectors/track, 19929 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1        3834    30796573+   7  HPFS/NTFS
/dev/sdb2            6963       19929   104157427+   f  W95 Ext'd (LBA)
/dev/sdb3            3835        6962    25125660   fd  Linux raid autodetect
/dev/sdb5            7100       19929   103056943+   b  W95 FAT32
/dev/sdb6            6963        7099     1100389+  fd  Linux raid autodetect

/etc/fstab: static file system information.
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/md0        /               ext3    defaults,errors=remount-ro 0       1
/dev/md1        none            swap    sw              0       0
/dev/hda        /media/cdrom0   iso9660 ro,user,noauto  0       0
/dev/hdb        /media/cdrom1   iso9660 ro,user,noauto  0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0

/etc/grub/device.map
(hd0)   /dev/sda
(hd1)   /dev/sdb

Thanks in advance for your help.

-- 
Best regards,
 JFW                          mailto:trash@tele2.be