The thing is that it wasn't ME that tried to install grub to /dev/sdb2, it was ubuntu. I haven't done anything. That's the bug, Ubuntu suggested something that is not possible.
** Changed in: grub-installer (Ubuntu) Status: Invalid => New ** Changed in: grub-installer (Ubuntu) Status: New => Confirmed ** Changed in: grub-installer (Ubuntu) Status: Confirmed => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1397698 Title: The installer could not install the boot loader To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1397698/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs