ata search during boot

[Ingo Guse]

I installed FBSD5.3 sucessfully on Toshiba-SatelliteM30 notebook.WLan 
and X with NVidia-driver 1280x800 works fine.
When the kernel boots, it searches for slave-drives on ata0 and 1. As 
there isn´t one, that causes delay during boot. How can I prevent the 
kernel to look for slave drives? I think something with loader.conf 
and/or device.hints, but I cannot find relevant items in the  docs. Any 
suggestions? Thanks.