Cannot boot into Win 7 Grub legacy "Error 13"

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http://ubuntuforums.org – Fred, I installed grub2 by using Synaptic and I can see a new menu.lst and it picked all the kernels installed on my Ubuntu 12.10 m/c. Great! It however did not have an entry for Windows 7 which is on (hd0,0). So, I manually added the Win 7 entry into the menu.lst as shown below. I still see "Error 13". Do you think I need to install grub on /sda (Windows disk) and boot from that disk for grub to load Windows and Ubuntu without any errors? Please advise. ******************** #title Windows #root title Windows 7 Pro x64 root (hd0,0) savedefault makeactive chainload (Hardware)