Yesterday I installed windows 10 from a bootable USB (which contains a folder named
efi so I think this bootable USB support both boot modes). But later I learned that UEFI mode is better than legacy (BIOS) mode. So I first confirmed which boot mode I am in by typing
msinfo32 in run dialog and it display
I also checked my hard disk partition style, its MBR. I know I would need to convert to GPT partition style before I install windows 10 in UEFI mode.
But I don't want to use third party softwares and I also don't want to update to windows creator update probably because windows update takes lot of time and data also all of the third party softwares are paid. So I tried doing it with diskpart utility by booting from bootable USB and opened up cmd in the repair windows and typed these commands:
X:\Sources> diskpart X:\Sources> list disk X:\Sources> select disk 0 (as my hdd was disk 0) X:\Sources> convert gpt
But it says error disk is not convertible.
So how would I reinstall windows in UEFI mode ? Any help would highly appreciated.
My BIOS configuration:
If I disable the legacy support I am still not able to select secure boot its still grayed. Would that cause any problems when installing windows in UEFI mode ?