Same bug, Ubuntu server 17.10. Trying to install / on an SSD, and /home on a separate drive. Tried twice in a row. I have 3 drives connected, all SATA-3. An SSD (60 GB), and two HDD (5TB). One HDD I didn't touch during install, was going to set it up post installation. No removable drives or anything exotic.
** Attachment added: "15154788155485487104846765287580.jpg" https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1663645/+attachment/5033161/+files/15154788155485487104846765287580.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1663645 Title: Installation hangs at 66% "Installing GRUB boot loader" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1663645/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs