Do you need to enable UEFI to run Windows 10? The short answer is no. You don’t need to enable UEFI to run Windows 10. It is entirely compatible with both BIOS and UEFI However, it’s the storage device that might require UEFI.

Does 64 bit Windows require UEFI?

On ARM it is not, or rather 32-bit OS on 64-bit UEFI is technically possible (only would still require the operating system loader to be 64-bit), but even fiddlier than on x86. Launching a 64-bit operating system from 32-bit firmware is simply not supported by the architecture.

Does Windows 10 need legacy or UEFI?

In general, install Windows using the newer UEFI mode, as it includes more security features than the legacy BIOS mode. If you’re booting from a network that only supports BIOS, you’ll need to boot to legacy BIOS mode.