Intel ICH7 SATA150 and Maxtor 6L250S0

i have one of my systems running FreeBSD-5.4 and now want to change to
FreeBSD-6.0, but when i boot from the CD the second Harddisk is not

What i find out: on FBSD5.4 the Controller is found as: "atapci0 <GENERIC
ATA controller>" but on FBSD6.6: "atapci0 <INTEL ICH7 SATA150 controller>".

Does anybody knows about problems with the INTEL SATA Controllers and
Maxtor-HDs ?

thx, Stephan Weber