I'm having similar problems with a Seagate AF drive. However, I learned how to use GNU Parted and set up the partition such that it is aligned, as described above by Maxime. The problem is that when I install Ubuntu on it, the system doesn't install correctly and hangs at the splash screen.
However, if I let Ubiquity make all the partitions, then they end up misaligned, according to Ubuntu's disk utility (palimpsest) and GNU Parted. So basically Ubiquity won't install on a correctly aligned drive, and insists on misaligning the partitions it makes. Either GNU Parted AND Disk Utility are buggy, or Ubiquity is buggy. ** Changed in: ubiquity (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/583790 Title: Ubuntu 10.04 and Western DIgital's new Advanced Format SATA drives - constant drive errors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/583790/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs