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/