So I wanted to dual boot Windows 8.1 and Ubuntu.
I followed this tutorial: https://www.youtube.com/watch?v=PK7gWIkAY7s
The problem I got was, after I restarted pc when prompted by Ubuntu installer.
I of course loaded into grub ,but Windows 8 isn’t there only Ubuntu.(on Ubuntu now)
This is my pc: http://www.pcworld.com/product/1179403/alienware-x51-mini-system-desktop.html

I have my Windows 8 disk, but I need to know what went wrong and how to fix it and make it so I can choose to boot Windows 8 or Ubuntu. When I got to Ubuntu home I see my Windows 8 partition as device.

Thx you for your time.

2 Answers 2


Check the GRUB configuration file once. It may be located in /boot/grub/ [or] etc/default/grub/ by default. "grub.cfg" file can be opened by any text editor. See if there is any Windows 8 entry in this file normally at the end of all entrys.

  • No there is nothing about windows 8 Jul 27, 2014 at 5:35
  • I think grub updating process at last while installing Ubuntu didn't go well. Try updating grub once again. type in terminal "sudo update-grub" without quotes. Jul 27, 2014 at 9:45

One possible solution to your issue would be to configure grub by first installing grub-customizer.

In Ubuntu, open a terminal window with ctrl+alt+t and enter the following to install grub-customizer:
sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer
Then launch it by typing:

You will be presented with a window

  • I type in "sudo apt-get install grub-customizer " hit enter.command works.but it asks for my password and it wont let me type it in.I am sure this is do to my inexperience with Ubuntu. Jul 27, 2014 at 5:45
  • This is normal behaviour. For security purposes, the terminal neither shows you your password as it is typed, nor does it substitute the characters you type with stars '*'. Just enter your password on the keyboard and press enter :)
    – alecdwm
    Jul 27, 2014 at 5:52
  • Whoops, that's my fault. Updating the answer with the fix. Just follow the answer from the top again and it should work! :)
    – alecdwm
    Jul 27, 2014 at 6:02
  • do i want "generate recovery entries" like yours aswell? Jul 27, 2014 at 6:13
  • To be perfectly honest, I neither know nor can I find any documentation on what 'generate recovery entries' does. That being said, the two references that I could find about it both suggested that you do indeed want to generate recovery entries. source 1 source 2
    – alecdwm
    Jul 27, 2014 at 6:21

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