I believe the cause of the error is that it was trying to install grub on an invalid device. You could try doing (hd2) or /dev/sda instead of (sda) for where to install grub.
Dec 2 09:40:01 ubuntu grub-installer: info: Installing grub on '(sda)' Dec 2 09:40:01 ubuntu grub-installer: info: grub-install supports --no-floppy Dec 2 09:40:01 ubuntu grub-installer: info: Running chroot /target /sbin/grub-install --no-floppy "(sda)" Dec 2 09:40:02 ubuntu grub-installer: Probing devices to guess BIOS drives. This may take a long time. Dec 2 09:40:02 ubuntu grub-installer: Format of install_device not recognized. Dec 2 09:40:02 ubuntu grub-installer: Usage: grub-install [OPTION] install_device ** This bug is no longer a duplicate of bug 73825 Xubuntu installer ** Tags added: grub invaliddevice -- Installer crashed. https://launchpad.net/bugs/74165 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
