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I am a Windows 8.1 user. I want to use dual boot with Ubuntu. I installed Ubuntu 15.04 with the Something Else option. Installed correctly in swap and ext4. When I start the PC Ubuntu boots. But I want to select win 8 or Ubuntu OS. During the installation of Ubuntu it showed a warning, something about BIOS UEFI mode.
Now how can I solve this problem? What setting can I use to be able to choose an OS to boot?
My motherboard is Gigabyte H81M-S2PV