Your /dev/sdb drive completely died during install from a severe hardware problem, then you tried to install grub to /dev/sda, which apparently is a Windows dynamic disk. This is not possible. You either need to convert this disk back to a basic one, or install grub to another disk and configure your system to boot from that one instead.
** Changed in: grub-installer (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1375740 Title: Grub fails to install with Kubuntu 14.04.01 LTS LiveUSB - Try Kubuntu Option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1375740/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs