Same problem with Toshiba Tecra S3. Ubuntu 6.10 installs fine and the laptop SATA chipset is handled correctly by kernel 2.6.17 through ahci driver. The problem arises with 7.04 Herd5. The disc is not found in the installation procedure. A workaround is: modprobe -r ata_piix modprobe -r ahci modprobe ahci At this point the disc is found and the installation process can go on, BUT when the system reboots no disc is found by the installed kernel, so the system is unusable. I suspect that is a Toshiba BIOS bug: there is no switch to choose the chipset ahci compatibility mode. Actually the chipset works in ahci mode but the kernel (at least the 2.6.20 kernel shipped with ubuntu) tries to handle the chipset with ata_piix driver and that fails.
-- Unable to install herd 4 on Toshiba S100 S1133 with SATA Hard Drive https://launchpad.net/bugs/86635 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs