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.
- Bug#455923: Failt to mount the root filesystem of sata h... Paulo Diovani
- Bug#455923: Acknowledgement (Failt to mount the roo... Paulo Diovani
- Bug#455923: Info received (Bug#455923: Acknowledgem... Paulo Diovani
- Bug#455923: Failt to mount the root filesystem of s... Bastian Blank
- Bug#455923: Failt to mount the root filesystem ... Paulo Diovani
- Bug#455923: Failt to mount the root filesys... maximilian attems
- Bug#455923: Failt to mount the root fil... Paulo Diovani
- Bug#455923: Failt to mount the roo... Paulo Diovani

