After Ubuntu9.10 is installed, how does one restore the Windows XP and Windows 7 boot menus?

This article is from the "Galaxy Qilin" blog. Be sure to keep this source region (prepare the Fedora12 installation in the format). The e-zone of the second hard disk is Windows 7 (note that it is not Area C, C zone is useless but has not formatted the old XP system), So I installed Ubuntu9.10 is already a multi-system. Today I again

This article from the "Galaxy Qilin" blog, please be sure to keep this source http://kpjack.blog.51cto.com/627289/219621

First, let me explain the background: I have a dual hard disk. The first hard disk was originally installed with XP and Fedora 11 (in the preparation format, Fedora 12 was installed), and the second hard disk's ezone was Windows 7 (note, it is not a C-zone, and the C-zone is useless but has not formatted the old XP system). Therefore, before I install Ubuntu 9.10, it is already a multi-system. Today, I installed Ubuntu 9.10 to the second hard disk by means of hard disk installation. However, after Ubuntu 9.10 is installed, XP on the first hard disk and Windows 7 on the second hard disk cannot be started. There are two Windows startup items, one of which press enter to restart the computer, and the other press enter to start GRUB. XP and Windows 7 cannot log on.

I have already installed sudo update-grub on Ubuntu 9.10 twice. The results are still the same and cannot start XP and Windows 7. With the enthusiastic help of a good-hearted netizen, I personally tried it and found a feasible solution: