Could you please attach /var/log/syslog and /var/log/partman to this bug, by commenting on the bug's web page? Thanks in advance.
Did you literally tell GRUB to install to "(sda)"? That's not a valid GRUB device name. ** Changed in: ubiquity (Ubuntu) Status: Unconfirmed => Needs Info -- GRUB failed to install to (sda) https://launchpad.net/bugs/71099 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs