>because EFI booting does not have any advantage, only disadvantage For an already installed system it doesn't really matters, so the point is moot here. But

>because EFI booting does not have any advantage, only disadvantage For an already installed system it doesn't really matters, so the point is moot here. But for the new systems setup I would always prefer a UEFI (with or without SecureBoot) because it allows to expose the HID management of the onboard/expansion board controllers, a proper way to return to the management/boot menu in the case of the failed boot. Sure, it doesn't always work good, but neither BIOS/CMS.