Comment 10 for bug 477167

I don't know if this is still a Problem. I run into this Problem recently. The principles described here

http://stackful-dev.com/raid-install-ubuntu-server-on-a-large-hard-drive.html

helped me. In particular the Information to install a 1 MB biosgrub Partition. This will be automatically detected.

Also here is some useful Information

http://stackful-dev.com/raid-101-recovering-when-hard-drives-die.html