How to add Windows 7 in GRUB bootloader

I dont have windows 7 in my grub bootloader..and i selected UBUNTU as my default OS.Now i cant boot Windows 7.:mad::mad:
Pls tell me how to add windows 7 in grub menu.
I also tried to changing the 40_custom file but it is read only so i cant change.
Help I am using UBUNTU 12.04 LTS

Try using yannbuntu (boot-repair) via a live CD/USB to reinstall the GRUB, and fix any errors :)

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Originally Posted by Jakin

Try using yannbuntu (boot-repair) via a live CD/USB to reinstall the GRUB, and any errors :)

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i dont have any CD/DVD of UBUNTU!!

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Originally Posted by Dhiraj1

I dont have windows 7 in my grub bootloader..and i selected UBUNTU as my default OS.Now i cant boot Windows 7.:mad::mad:
Pls tell me how to add windows 7 in grub menu.
I also tried to changing the 40_custom file but it is read only so i cant change.
Help I am using UBUNTU 12.04 LTS

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Hi,

First of all , open a terminal (ctrl+alt+t combo keys) and do this

Code:

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sudo update-grub

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Then you can install a package that will allow you to modify your grub-bootloader . Its easy to use.

Open a terminal (ctrl+alt+t combo keys) and apply bellow commands

Code:

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sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer

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Open grub-customizer and change your settings according to your preferences.

And here is a great how-to for grub-customizer : http://ubuntuforums.org/showthread.php?t=1664134 , to take advantage all of the features.

Thanks

Hey Nikth Bro,
When i try to install grub customizer ,it says package not available,!!!:mad:

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Originally Posted by Dhiraj1

Hey Nikth Bro,
When i try to install grub customizer ,it says package not available,!!!:mad:

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Hey ,

did you copy-paste the commands from here to your terminal ?

Please give the results of

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sudo udpate-grub

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Thanks

+1. update-grub should pick up any OS's on the disk and they should then be available in the boot menu. I do have one question, thought:

Does:

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i selected UBUNTU as my default OS

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mean that in the installation you told it to use the entire disk for ubuntu, not dual install for dual boot? If so, then you probably don't have a partition with Windows installed on it now. Boot up ubuntu, go to disk utility, and see what partitions are defined. Do a screen print of this and attach it back in a reply here. Don't do anything is in disk utility - just display, print screen and exit.