Raid not seen as raind in SLES 10 Installation

Hello,

we have a Fujitsu-Siemens TX200 with a onboard AIC-7902W adapter and 4 disks. We have set them up as two pair of RAID-1 disks.

The bios startup-screen shows us two pair of RAID1 disks.

When we try to install SLES10 we see 4 disks !

How can we tell Linux that there are only two RAID and why does the kernel see the disks ? Should this not be hidden by the AIC hostadapter ? Is it the INT13 that makes this problems ?

Thanks
Andreas