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I installed ubuntu three times in the hard drive of my PC, but windows7 don't recognized it. How can I have dual boot order, in an easy maner?. I saw some video tutorials, but they are a little complicated. Please help me. I really want to try linux.

Martín Abonce
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  • When installing, you need to select device for boot loader installation. Did you select entire disk (dev/sda), not Ubuntu partition (for example dev/sda1)? – Ljiljan Veselinovic May 28 '15 at 17:50

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If you install Ubuntu first and then Windows , the Windows is going to overwrite the MBR and create bunch of errors. Provided that your Windows is healthy

  1. Burn Ubuntu Live USB / DVD (You can do it via Unetbootin).
  2. Boot the machine in Live Ubuntu environment.

  3. Open up terminal and type

    sudo add-apt-repository -y ppa:yannubuntu/boot-repair; \

    sudo apt-get update; \

    sudo apt-get install -y boot-repair && boot-repair

  4. Once the boot-repair window pops up , click on recommended repair.

  5. Reboot. This might do the trick

Mayur Kulkarni
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  • Might be a good idea to mention that he has to run Ubuntu from the burned disc and perform the repair within that Ubuntu environment – D-unit May 28 '15 at 17:13
  • @danielbockersorensen I've edited the ans :-) – Mayur Kulkarni May 28 '15 at 17:17
  • Actually the problem is probaly in the BIOS, you need to select which OS to boot in the BIOS. See -http://askubuntu.com/questions/221835/installing-ubuntu-on-a-pre-installed-windows-8-64-bit-system-uefi-supported – Panther May 28 '15 at 17:24
  • What if his was not MBR? Will the same apply for GPT tables? – daltonfury42 May 28 '15 at 17:52
  • @user3073656 - READ THE LINK I GAVE -"TROUBLESHOOTING

    YOUR COMPUTER BOOTS DIRECTLY TO WINDOWS

    This is a common problem and if you do not get a GRUB menu , re-installing or repairing grub will NOT HELP"

     – Panther May 29 '15 at 16:11
  • @bodhi.zazen I see, but then it is not there in my BIOS! See this screenshot! – daltonfury42 May 29 '15 at 16:41
  • @user3073656 - You have to look through the uefi menu or if you can not find it contact the vendor – Panther May 29 '15 at 17:55