It appears that grub2 is not generating the drivemap command to fake the windows boot sector into thinking the drive it is on is actually the primary drive in the system ( it can't boot from any other ).
** Summary changed: - Grub2 lists, but can't boot Windows 7 after upgrade from Ubuntu 12.04 to 12.10. + Grub2 doesnt drivemap windows entries booting from second disk ** Changed in: grub2 (Ubuntu) Status: Confirmed => Triaged ** Changed in: grub2 (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1099127 Title: Grub2 doesnt drivemap windows entries booting from second disk To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1099127/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs