I also have found a way to convert drive from GPT to MBR and vice versa without data loss using the AOMEI Partition Assistant Pro Edition 6.0 but, I fear because actually, I have Windows 10 already installed on a GPT drive and I'm interested in installing Windows 7, but for that my drive should be MBR (although it should work on GPT but it's not)
So, if I convert my drive from GPT to MBR without data loss using the AOMEI Partition Assistant Pro Edition 6.0 will it effect my current windows 10 which is already installed on a GPT drive i.e will it stop functioning get corrupt etc? I want to keep both Windows 10 and Windows 7.
Please share your advice!
Here is the PIC of my UEFI. Compatibility Support Module (CSM) is enabled.
After I create a USB Bootable drive of Windows 7 x64 (download from Microsoft Dreamspark) and created by RUFUS with GPT and UEFI compatible (CSM DISABLED), it gives me this error. If I press the Enter button it boots normally into Windows 10. I think I am very near to solve the problem. Please help!