Comment 11 for bug 583790

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.