Well, I tried those commands and it did me no justice. I don't know how to change the driver you speak of so I'm thinking i'll have to give up on getting native Plan9 onto this netbook.
I tried an experiment with both success and failure; in my bios, I have an option to change "sata controller mode" from achi to ide. I tried changing that and then the plan9 installer can see my hard disk, however, the failure is that in that mode, I cannot boot FreeBSD, it just freezes the system almost right away. Go figure : ( At least I have it working on my other system. Do you know if Bell Labs is still developing Plan9? Will we ever see a 5th edition?