Bug#455923: Info received (Bug#455923: Acknowledgement (Failt to mount the root filesystem of sata hard disc on amd64 kernel))
well, strangely, if i add ahci to /etc/modprobe.d/blacklist the system still dont boots, and then i need, on busybox, to remove the module from /etc/modprobe.d/balcklist and load it again. so i can boot. :( in resume, my pc almost never boot alone, at first time.
Bug#455923: Acknowledgement (Failt to mount the root filesystem of sata hard disc on amd64 kernel)
I think i found the problem. Once on busybox, if i unload the 'ahci' module, then run 'udevtrigger', the sata hd is recognized and, on 'exit' busybox, the root filesystem is mounted fine. So, it seens that all i need to do is to build a new kernel, with the ata_piix module and without the ahci.