Comment 30 for bug 84603

Here are steps to workaround the problem during the installation process:

  1. Add break=top to the kernel cmdline
  2. At the prompt, run: modprobe piix
  3. Then exit

And, here steps to make the workaround permanent after an installation:

  echo blacklist ata_piix | sudo tee -a /etc/modprobe.d/blacklist-ata
  echo piix | sudo tee -a /etc/initramfs-tools/modules
  sudo update-initramfs -u
  sudo reboot

The problem should be fixed for the first SRU release of Feisty.