This is still an issue with Ubuntu 12.04. Same exact issue; would not recognize any hard drives, then removed the dmraid package and the installer recognized it right away. Interestingly GParted was able to recognize the HDD the whole time.
** Changed in: ubiquity (Ubuntu) Status: Expired => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/474717 Title: installer doesn't let me partition any harddrive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/474717/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs