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I formatted the partition containing Ubuntu 13.04 running parallel with Windows 8, I then merged the partition disk into another disk and that is where the problem starts.

When I restart the computer and I get grub rescue.

I searched for solution on net they advised me to repair by booting with Windows CD, this resulted in another problem and now it's saying "operating system wasn't found " and I can not boot with Windows CD.

My OS is windows 8.

Please help me with a solution.

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marked as duplicate by user68186, James Sep 4 '13 at 0:22

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

See Grub rescue problem after installing ubuntu and How can I repair grub? (How to get Ubuntu back after installing Windows?). They should help in getting both the Windows and Ubuntu systems working, even though the cause of this problem is a bit different from the causes there (i.e., this is not the result of installing Windows or Ubuntu). If those don't help in getting rid of the GRUB rescue prompt, please edit your post with more info. For help with the Windows CD, I recommend Super User. – Eliah Kagan Sep 3 '13 at 13:52

Steps To Fix Windows 8 Boot

  1. Boot from Windows CD/DVD and choose “Repair” when it shows up.

  2. Choose Command Prompt on the resulting screen and run the following two commands:

    bootrec /fixmbr
    bootrec /fixboot
  3. You are done!

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