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As the title says when I select unetbootin as my OS I get an error saying that Windows failed to start. It advises me to repair using my Windows disc. Then I get this on the screen:

File: \ubnldr.mbr
status: 0xxx000000f
Info: The application or operating system couldn't be loaded because a required file is missing or contains errors.

I am using Windows 8 and Ubuntu 13.04.

So I was already booting In legacy. On a lark I decided to try UEFI and that has made it so I cannot even boot windows after switching back to legacy. I get:

error no such partition  
grub rescue >  

From the boot menu I can enter either P2: TSSTcorp DVDWBD SN-406AB or P1: WDC WD7500BPKT-75PK4T0 or Bigfoot Boot Agent.

This is quickly going from bad to catastrophic. Please assist. I am in way over my head now. I removed the Ubuntu DVD and still no luck getting back into Windows.

Any advice on getting around this or understanding what the problem is would be appreciated.

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Have you installed Ubuntu using Wubi? Are you trying to boot into Windows or into Ubuntu? Please edit your question to clarify. –  edwin Jul 19 '13 at 20:58
1  
possible duplicate of Install Ubuntu next to Windows 8 (UEFI dual boot) –  Deus Deceit Jul 19 '13 at 21:16
1  
Wubi does not work with systems that came preinstalled with Windows 8. Wubi is also broken in 13.04. –  user68186 Jul 20 '13 at 0:51
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3 Answers 3

Ubuntu have messed the boot loader apparently. The fix I used when i had a similar problem is located here: Install Ubuntu next to Windows 8 (UEFI dual boot) (your question is a possible duplicate of that post)

These two lines did it for me:

sudo add-apt-repository ppa:yannubuntu/boot-repair

sudo apt-get update sudo apt-get install boot-repair Now run boot-repair

Read the article and let us know if that helped or if our problem is related to that.

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This happened to me before. You need to go into your BIOS and disable UEFI and enable Legacy booting. That's what I did and it worked perfectly finefor me.

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So I was already booting In legacy. On a lark I decided to try UEFI and that has made it so I cannot even boot windows after switching back to legacy. I get

error no such partition

grub rescue >

From the boot menu I can enter either

P2: TSSTcorp DVDWBD SN-406AB

P1: WDC WD7500BPKT-75PK4T0

Bigfoot Boot Agent

This is quickly going from bad to catastrophic. Please assist. I am in way over my head now. I removed the ubuntu DVD and still no luck getting back into Windows.

Sorry about the format of my error messages but am am now on my phone and the options are very hard to read.

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Welcome to Ask Ubuntu! If you have another question, please ask it by clicking the Ask Question button. –  edwin Jul 20 '13 at 1:07
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@edwin Actually this is almost certainly the same person (same name, same avatar, avatar appears auto-generated from email address). So they should only post a new question for a second, separate problem. Dodd: Currently you're using Ask Ubuntu with 2 separate accounts, so the system doesn't know this is one of your questions. If you register an account, you an then use the contact us link at the bottom of this page to ask for your accounts to be merged. Then you'll be able to post comments on your own questions and their answers, and it will be easier for you to edit your own posts. –  Eliah Kagan Jul 20 '13 at 3:00
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