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help me... I have installed Ubuntu 11.10 above win7, unfortunately after finish installation and restart the Grub didn't appear, I look out in grub menu and win7 wasn't exist, I try to repair with win7 installation but win7 installation wasn't detect the win7,, how to recover my win7?

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Did you installed Ubuntu over the partition where Windows 7 was? – LnxSlck Mar 10 '12 at 13:52

Type the following command in terminal:

sudo update-grub
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