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I am trying to create a dual boot of Ubuntu 10.10 with Windows 7. My hard disk allocation were as follows:

Windows 7  NTFS       100 GB
/boot      EXT4       200 MB
SWAP       LINUX SWAP   4 GB
/          EXT4        46 GB

After installation is complete, instead of getting the boot screen of Ubuntu, it directly boots from windows 7 without asking anything.

What is wrong? I run the Live Cd again using USB drive and I see that the \boot, and \ are occupied with most likely Ubuntu data.

Now How do i point my Laptop to point to Ubuntu Boot instead of Windows Boot

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4 Answers 4

up vote 2 down vote accepted

Follow the steps below to install GRUB from a live CD it needs to be installed into the Master Boot record of the partition with Ubuntu installed.

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+1, great It worked –  Starx Jan 23 '11 at 12:05
    
BTW, give me the source too, I would like to learn more –  Starx Jan 23 '11 at 12:13

Where did you install GRUB to? You should be able to recover the installation if you re-install GRUB correctly see here.

I also recommend you read through the Community Documentation here - it should give you enough guidance to recover the installation.

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I am not sure... Do you mean, Where I selected the Boot Loader Partition? If yes... I selected the "\" directory –  Starx Jan 23 '11 at 9:44
    
I thought GRUB would be installed to \boot directory. Am I Wrong? –  Starx Jan 23 '11 at 9:46
    
your /boot partion is not root which is / and any way you should in stall grub to dev/sda the actual root of the drive then update-grub will see all O/S. if you hold right shift key on boot you may see the grub menu in wich case it has a recover menu you can use. –  robin0800 Jan 23 '11 at 10:54
    
Thanks jgbelacqua - used it myself more than once ;-) –  Mark Rooney Jan 24 '11 at 10:13

A easy GUI way is to Download Grub Customizer Portable and then right click properties -> permissions and tick allow excecuting and then run it by double-clicking it and then go to File -> Install to MBR.

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Is this a online package, coz i can't seem to install it. Can you give me the source of that link for more info. –  Starx Jan 23 '11 at 12:05

It's not uncommon for this to happen on a dual-boot system (with Windows wiping out Linux/Ubuntu or vice versa) but recovery can still be a bit touchy.
If you can get into Ubuntu via the live CD and mount your existing install, you should be able to run grub-install and have your boot partitions rediscovered. A more complete description of options is here . You should at least be able to verify that your Ubuntu install is present.

Here's the relevant community wiki for Reinstalling from LiveCD.

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How do i mount my existing Install using Live CD. I am n00b at ubuntu, so please :D dont mind :) –  Starx Jan 23 '11 at 8:37

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