It seems to me that this is a regression caused by most recent update of debian-installer-utils that started using dpkg-divert rather than mv to manage start-stop-daemon.
So I would guess the simplist fix here is to just make dpkg-divert quiet. I've submitted merge proposal at https://code.launchpad.net/~smoser /debian-installer-utils/lp912431/+merge/87709 . -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/912431 Title: Preseeded 12.04 grub-install failed: Wrong number of args: mapdevfs <path> To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debian-installer-utils/+bug/912431/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs