I'm trying to install Windows 7 on a NTFS partition after installing Ubuntu 14.04. But it says that I'm using a GPT partition. The solution I found was to erase everything, then install Windows 7 then reinstall Ubuntu. I can't believe it can't be possible to get rid of this issue without deleting my Ubuntu system. But I still don't understand why I have this GPT issue. I'm using UEFI with Fastboot off.
There used to be a UEFI Matshita DVD boot option in my BIOS. But it doesn't exist anymore. I guess if I'm able to restore it, I could boot from it and finally install Windows 7 on GPT. What do you think about that ? Is it possible to get this boot option back ? (Dell Latitude E6540)
Or maybe creating a bootable USB drive would help, but will it work on UEFI?