Dual boot ubuntu 12.10 and windows 8 Dell Inspiron 15 r
I purchased a new Dell 15R laptop which came with pre installed windows 8 64 bit and ueifi boot. I made a ubuntu 12.10 dvd and loaded it. When i started installing my installer could not recognise any other windows 8 or any other OS installed. When i moved to advanced partition tool, i could see my free space, my windows partitions. But i did not proceed. can anyone help.
Solution 1:
I had a similar problem with my Dell XPS 8500 desktop. I found the following bug report helpful:
https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1079056
The workaround suggested there worked for me. Run ubiquity (the Ubuntu installer) with the following command:
$ WINOSDATA=true ubiquity
Slightly more detailed instructions, if they are needed:
Boot your computer from the Ubuntu Live CD (or USB), and select the option "Try Ubuntu without installing".
Open a terminal window, e.g. by pressing Ctrl+ALt+T.
Enter the command
$ WINOSDATA=true ubiquity
The Ubuntu installer should then detect your Windows 8 installation (it did for me).
The problem appears to be with os-prober, the command used by ubiquity to detect installed operating systems. You can test this by running first $ sudo os-prober, and then $ sudo WINOSDATA=true os-prober. You may find that in the first case, no OS is detected, but in the second, Windows 8 is detected. (Substituting any non-zero value for "true" works equally well. Don't ask me why.)