You need to be following bug #477169 for the most up to date info on this problem, as well as a workaround solution.
-- After 9.10 grub update can not boot into Wubi install https://bugs.launchpad.net/bugs/477104 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs