I've installed Ubuntu 12.04 along side windows 8 and can no longer boot into Windows. GRUB shows Windows 8 as an option but when I select it I see the Windows logo for a minute and then the screen goes black. I did not have this problem after the initial install, it began 2 days later.
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boot into your ubuntu if you can or run ubuntu from pendrive and install grub repair
sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
sudo apt-get install -y boot-repair && (boot-repair &)
and read theseinstructions on recommended methods
Avinash Raj
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Zuko
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I ran boot repair and the problem has not changed. Here is the URL from my boot repair readout; http://paste.ubuntu.com/6937794/ – Nettlesworth Feb 15 '14 at 15:48
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when you run a sudo update-grub does it detect Windows? – Zuko Feb 17 '14 at 20:39
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Yes it does detect windows. – Nettlesworth May 27 '14 at 17:39
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Option two is to make a bootable flash disk with Ubuntu and reinstall ubuntu to restore it back. That should not affect your windows and it will appear back on the grub. – Zuko May 30 '14 at 13:49
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You have to change UEFI mode in bios to legacy mode.After that save the changes and then exit.
Now select the windows option from grub.It works.
Avinash Raj
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I do not believe I have UEFI. When I enter BIOS I do not see a UEFI mode. I do note that I have BIOS version 1.51 – Nettlesworth Feb 15 '14 at 16:40
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1try to repair your windows boot files and then try boot-repair.See http://askubuntu.com/a/381603/202806 – Avinash Raj Feb 15 '14 at 16:42
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I do not have a windows install disk. Is there a way for me to create one? I have a product key for Win8, keep in mind that I will be using Ubuntu 12.04 when creating it. – Nettlesworth Feb 22 '14 at 00:14