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I have Windows 10 and before I setup Ubuntu 16.04 64-bit I disabled fast startup from battery settings. Then I started to setup my Ubuntu. I give it hard drive and 2 GB swap and I pressed Install. After install I want to play a game on my Windows 10.

The problem is when I restart my laptop and select Windows 10 from the boot menu it didn't do anything, just a black screen and returned to my boot menu over and over again and I can't access Windows.

P.S : I Can access to windows Folder From ubuntu

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    er, are you sure you didn't accidentally wipe windows? Can you see a windows partition from ubuntu?
    – Blaine
    Jul 15, 2016 at 2:11
  • I can see partition from ubuntu and i can access to the folders Jul 15, 2016 at 13:58
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    Rather than guessing, best to see details on how you installed: Post the link to the Create BootInfo summary report. Is part of Boot-Repair: help.ubuntu.com/community/Boot-Info
    – oldfred
    Jul 15, 2016 at 17:33

2 Answers 2

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Make sure you can access your windows 10 drive from within Ubuntu by clicking the drive icons on the unity bar.

If you can access them, setup grub again

sudo update-grub

and then, reboot.

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  • okay after reboot what i have to do open windows or open ubuntu ? Jul 15, 2016 at 13:58
  • I open the terminal and I type : sudo update-grub after reboot I try to open lunch windows 10 but the same problem black screen and return to the boot menu :( Jul 15, 2016 at 14:34
  • Sounds like you damaged the boot-part of Windows somehow :/ How did you install? Manually or what did you choose during installation ? In Ubuntu, open gparted (sudo apt-get install gparted, if you dont have it) and maybe take a screenshot of the partitions so we can help you better. Jul 15, 2016 at 15:28
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Update GRUB

Try entering this command:

sudo update-grub

Use the Boot-Repair tool

For more information, see the Community Wiki page.

Installing Boot-Repair

Use the below commands to install:

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair

Launching Boot-Repair

  • Use the launcher from the Dash...

... or ...

  • Enter the command below in a terminal:

    boot-repair


Other information

Thought this was worth mentioning...

DO NOT attempt to convert the disk from MBR to GPT form!!! That will render Windows unbootable! (Yes, I know you're having trouble booting Windows now, but the conversion would be like jumping into a swimming pool filled with rusty nails in an effort to heal a scratch.) To give an answer that's more than a guess, we need more information. Please run the Boot Info Script, post the RESULTS.txt file it produces to a pastebin site, and post the URL to your document here – Rod Smith

Comment - "Windows 10 not booting after installing Ubuntu 15.04"


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  • i can't understand anything you say except The asker solved a non-bootable Win10 after he updated GRUB. sudo update-grub Jul 15, 2016 at 17:18
  • Have you figured out a solution @AbdallahMohamed ? If not, can I offer more help? Jul 17, 2016 at 3:58

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