Comment 7 for bug 1267829

Ok, there is an option for uefi or non-uefi system in bios, sorry (It was in a place I did not count). Someone who install windows 7 forgot disable this.

But the problem remains. It's no logical for ubuntu install UEFI stuff in a MBR hard disk, even if it boot as UEFI. It would make more sense if it warns "Hey, UEFI is enabled in setup, but your disk has a MBR table with a non-UEFI system installed (win 7), so go to setup and disable UEFI for sure, or create a new GPT partition table with EFI partion (this will erase your entire disk!)".