Hey guys. I'm overwhelmed about all of these mbr, gpt, and boot stuff. So, currently I have a windows 7 32 bit, it's 1 partition on my hard drive and I want to split this partition to install windows 8.1 x64 and have it on dual-boot. So to do it do I just split the partition in disk management, boot to my usb pendrive windows 8.1 and will it let me install on that newly made partition? Or before installing windows 8.1 on this partition do I need to convert it to gpt? I think I have alot more questions to ask but maybe I'll just explain what I want to do. I grabed a key to windows 8 oem from the bios and I want to check if it works, but I also want to keep my windows 7 installed in case that the code doesn't work. I read that it should activate even on the installation process, but even it it won't then I can just use some generice key and after installation I can just swap to my oem and it would work, but I just want to be 100% sure. Or maybe you recommend for me to just use some virtual machine, check if the key will activate (can I even activate windows on VM? I've never used virtual machine) and if it does just boot to my windows 8.1 install and format whole drive?