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Hi I'm a newbie to Linux and have been interested in trying it out. My wife has no interest in it so I'm forced to create a dual OS situation but I've really run into a brick wall here.

I've done as much Google searching and read as many tutorials as I can but this just isn't working. I have two HDDs that I can use. One has Win7 installed, but as soon as I installed Ubuntu on the other drive Windows refuses to boot. I tried using my 7 disk to repair the bootloader which didn't work, and I also tried to install grub which also did not work. Any help would be appreciated.

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    Please use Boot Repair and post the repair log. – Danatela Mar 5 '14 at 9:42
  • Windows 7 boot repair or some Ubuntu boot repair? – user254959 Mar 5 '14 at 9:53
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  • Ok cool it did do a thing and at boot I now have the grub menu. Windows 7 is not there though. Here's that url you asked for paste.ubuntu.com/7037700 – user254959 Mar 5 '14 at 10:13
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    This can be marked as solved. Your advice helped tremendously and I appreciate it. It took a little more work than I thought it would take. It required a new install of Windows. But I did that, shrank the partition down in Windows. Then I booted up the live CD and installed Ubuntu. After that was done I used the boot-repair you mentioned. Now I can switch between the two seamlessly. Thanks again! – user254959 Mar 5 '14 at 16:58
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First of all, you have to install and run Boot-Repair. Choose Recommended Repair.

Once you have done it, boot into Ubuntu, then run

sudo update-grub2

Normally, that's all. You should not care for Windows, as it will find it for you. If not, repair the Windows' MBR and repeat Boot-Repair recommended procedure. There is alternate way if you want to make Windows entry manually.

Enabling Windows manually

Edit /etc/grub.d/40_custom

#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.

menuentry "Microsoft Windows 7" {
        insmod ntfs
        set root='(hd0,1)'
        drivemap -s (hd0) ${root}
        chainloader +1
}

Run

sudo update-grub2

And you will see Windows at the end of boot menu.

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