Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I searched the internet about this problem, but it seems that most of the people get the opposite issue.

I used to have Ubuntu 12.04 alongside Windows 7 on my old Notebook. I recently got a new Dell Inspiron 15R with Windows 8 installed. Now, I'm not a pro using Ubuntu or any other Linux distribution, but I like it and need it for my study. So I installed Ubuntu 12.04 alongside Windows 8, without thinking that could have differences to installing it alongside Windows 7.

Anyway, I created a partition for the Ubuntu Root (/), Swap and /Home, but I think I accidentally installed the Ubuntu boot manager at the same partition as Windows 8 boot manager partition.

So when I restart I get only Grub showing me only Ubuntu options to boot, the opposite of many others that with Windows 8 seems to be able to boot directly to Windows 8 after installing Ubuntu.

I can get to Windows 8 if I enter my BIOS and choose Windows 8 Boot Manager as boot option. But it seems to be SO MUCH slower than before, and it reconfigured some things like the clock time.

Did I lose my Windows 8 configuration forever? What can I do to normally dual boot and why is the Windows 8 system so slow after the installation?

Boot-Info URL: http://paste.ubuntu.com/5993411/

share|improve this question
Did you deactivated the "Secure Boot" and activated the "Legacy Boot" options in your system? The version of Ubuntu that you installed was 32bit or 64bit? –  Braiam Aug 15 '13 at 11:15
is UEFI enabled from the BIOS settings? –  Gary Lising Aug 15 '13 at 11:31
Secure Boot is activated, Legacy Boot is deactivated. –  Gustavo Amgarten Aug 15 '13 at 15:56
The version of Ubuntu is a 64bit version –  Gustavo Amgarten Aug 15 '13 at 15:58
Please indicate your Boot-Info URL. ( help.ubuntu.com/community/Boot-Info ) –  LovinBuntu Aug 16 '13 at 9:13

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.