FYI, for anyone that wants to use the original fix as a workaround until an official fix is released, the grub-installer script can be found at /usr/share/grub-installer/grub-installer on more recent versions of Ubuntu. So, step #3 given by TJ above becomes:
sed -i 's/\($chroot $ROOT grub-probe $@\)/\1 | head -1/' /usr/share /grub-installer/grub-installer Changing this (I used nano to edit the file instead of sed) enabled me to install Ubuntu 14.04 LTS Desktop on a BTRFS raid setup without issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1354730 Title: 14.04 grub-install failed: Wrong number of args: mapdevfs <path> To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1354730/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
