freebsd install on poweredge 2900

[Stas Khromoy]

hey folks

trying to install freebsd 6.1 on dell's poweredge 2900
6 hard drives on *perc 5/i integrated controller
( the drives are 146gb SAS).

i've set up raid 1 for the first 2 drives
and raid 10 for the remaining 4 .
everything is showing up tip-top in the controller configuration
one virtual drive is 146gb the other one is 280gb

when i finally get to partioning  menu during the FreeBSD install
i see two volumes, problem is both of them are showing up as 146GB.