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I tried to install Ubuntu. My system already has Windows 7. I would like to keep the existing Windows installation. After installation of Ubuntu I restarted the PC, but there is no boot menu. As per the opinion of the Linux team the following commands were used.

sudo grub-install /dev/sda
sudo update-grub

The command executed correctly, but there is still no boot menu. What do I have to do?

Please help me.

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I've edited your post to remove the caps.. Please check before posting if your Caps Lock is on.. ;) –  SirCharlo Jul 18 '12 at 13:24
    
@SirCharlo I still see it in all caps... –  Lilian A. Moraru Jul 18 '12 at 13:25
    
Commented before actually editing :P –  SirCharlo Jul 18 '12 at 13:26
    
WELL READING SOMETHING IN ALL CAPS IS USUALLY QUITE ANNOYING, SO TO HELP YOU GET MORE HELP I THOUGHT IT WOULD BE APPROPRIATE TO DO SO!!!! –  SirCharlo Jul 18 '12 at 13:29
    
can you help me through any remote desktop management software –  anilkumar b Jul 18 '12 at 13:30

3 Answers 3

Try to show the Grub menu

Hold down the Shift key as the computer attempts to boot to display the GRUB 2 menu. In certain circumstances, if holding the Shift key method does not display the menu pressing the Esc key repeatedly may display the menu.


If that doesn't work, then using Boot Repair to reinstall and fix Grub.

Boot Repair

Repair the bootloader

To restore the Grub bootloader, follow these steps.

Open a terminal, and run the following commands:

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair
boot-repair

After a few seconds, Boot Repair's main window will open.

Click on Recommended repair.

You're done!

Reboot to test everything out.

If everything went well, you should be up and running by now.

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  • Boot a live cd
  • Mount the partition where you want to install GRUB, likely it's the partition where Ubuntu is installed

open a terminal and run this command

sudo grub-install /dev/sdX --root-directory=/where/ubuntu/is/mounted

choose the X and the right path according to your configuration.

You do not have to run

sudo update-grub

after grub-install just reboot.

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what you mean by"Mount the partition where you want to install GRUB," i have no experience in ubuntu –  anilkumar b Jul 18 '12 at 13:44
    
Your answer is too complex, please delete it or clarify it for inexperienced users.. Thank you! –  SirCharlo Jul 18 '12 at 13:51
    
i tried it but no result, there is no boot repair window opened –  anilkumar b Jul 18 '12 at 14:17
    
sudo add-apt-repository ppa:yannubuntu/boot-repair sudo apt-get update sudo apt-get install -y boot-repair boot-repair ////////// no result –  anilkumar b Jul 18 '12 at 14:20
  • Download Boot-Repair-Disk
  • burn it on a CD or make a liveUSB
  • Boot on it
  • Click Recommended Repair
  • Write the URL on a paper
  • Reboot
  • If still not good, indicate the URL
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