Quite some time ago, I installed a Linux system on my moms laptop. And just recently I noticed I have installed and partitioned (with fdisk) a BIOS/MBR on a system, that already has UEFI.The machine now has dual boot Windows 7 and Arch Linux and it seems to be working just fine. I wouldn't even have noticed, if I haven't checked dmesg and that there are some errors in it, then I finally checked the partition table...and got shocked (I really didn't expect that at the time, It was my first installation on a UEFI machine).Did anyone had the same experience here? What are the consequences leaving this unfixed? And is there a way to fix this, without reinstalling everything?
Accidentally installed BIOS/MBR on GPT/UEFI
arch linux;gpt;mbr