Last problem I must fix (HD performance with Asus p5B-e)

[HexDump]

Hi all,

 

I have this mother board Asus p5B-e with a SATA HD and drive. I need to set Sata to compatible mode in order to install. I have installed ok osx 10.4.8, but know I would like to achieve good performance with HD. Could anybody tell me what should I be doing? If I set now, type of SATA to Enhanced, it runs better, but at bios start up I get an error (Slave drive does not support mode (or something like this , I´m not at home) ). Should I install any kext or something?.

 

Thanks in advance,

HexDump.