Re. the partition configurations causing this: My system has five drives and NO extended partitions on any of them.
Drive 1: part. 1 swap, part. 2 BTRFS Drives 2-5: All BTRFS full drive filesystems. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1080701 Title: After 'Preparing to install Ubuntu' screen, raring installation hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1080701/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs