I can confirm this bug too, noticed with Mint 18.1 (link with more details: https://forums.linuxmint.com/viewtopic.php?f=46&t=236741 ) but have also tested and confirmed with Ubuntu 16.04.
The bootloader seems to always get placed on the first EFI partition it finds. This can be very inconvenient, e.g. if you want to dual-boot with Windows on a separate disk and don't want to affect the disk Windows is installed on in any way. This can be worked around by changing the ports the drives are connected to, or by disconnecting the other drive before installing (and then reconnecting the other drive & running "sudo update-grub" post-install), but this is far from ideal and not something I'd want to advise new/less experienced users to do. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1481516 Title: ubuntu installer modifies EFI configuration on wrong harddrive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1481516/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
