I have the same problem on a Fujitsu TX150 S7 with Xeon X3450. Installing with mdadm on two SSDs. Going to leave it overnight as well and will see what happens. The last debug messages are
os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/sdb1 [this is the second member of the mdadm RAID1 array] 50mounted-tests: debug: creating device mapper device /dev/mapper/osprober-linux-sdb [cuts off] -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
