Previously I had an Intel based PC with ASUS P5G41-MLX which used BIOS, so my HDD partition was MBR obviously. Recently I have upgraded my PC with UEFI based Motherboard which is MSI 970 GAMING motherboard. But I'm not sure about converting my HDD to GPT for a future OS upgrade or a clean OS installation, as I just plugged my OLD HDD with Windows OS with my new Motherboard. So far there is no issue. As I told earlier that my new Motherboard is UEFI based Motherboard but surprisingly my system information is showing that I'm on LEGACY BIOS mode. Does it mean that I'm running OLD BIOS instead of UEFI?
Check the image below
And my BIOS menu is showing this
So Do I need to change it to GPT ?