[CentOS] problem with installing centos 5.3 on sata ahci

Hello,

I am trying to install Centos on sata ahci. The installer first waits 
few minutes while loading ahci module. Then, the installer cannot detect 
any disk during the partitioning phase. What might be the problem? I 
have switched to IDE in bios and it still is the same.

Best regards,

mjb