It is strongly recommended to disable 'Fast Startup', aka 'hybrid shutdown' or 'hybrid boot' in Windows. If the drive is empty, try installing Windows before installing Linux. On the other hand, ARM devices with windows 8 or later preinstalled are forbidden from allowing the user to disable secure boot. That means that any AMD64 computer with windows 8 or later preinstalled, has to be capable of disabling secure boot, and mange the secure boot keys from the UEFI System settings.

Microsoft dictates the requirements that any computer bearing the windows logo has to follow. Please read this to learn how to enable and disable Secure Boot for your UEFI system settings (also called BIOS) This guide assumes you have a computer with Windows 7 or later installed on a GPT-partitioned drive and booting in UEFI mode.

2 Optional: Download and install rEFInd in Windows.

I can't remember the name of the video, though. Someone at YouTube managed to boot XP years ago from a hacked mainboard with SeaBIOS. 😁Īlso, Windows NT only needs a very basic BIOS to boot, it seems. So it wouldn't be necessary to start from zero.ītw, just recently, DOOM was ported to UEFI. I mean, there are fascinating projects like Open Firmware, CoreBoot and SeaBIOS. Maybe it's even possible port over some projects, system files or boot loaders.

I just wished, I'd know more about how UEFI works. I suppose the CSM needs to customize what appears in F000:xxxx even when in real mode which sounds pretty custom. I'm curious whether a Compatibility Support Module is inherently custom to each BIOS or each chipset, or if there is a way to write a generic one that could be loaded from disk rather than being an integral part of the UEFI BIOS. Because, Windows x86 didn't support 32-Bit UEFI and using the old BIOS/CSM was the only way to boot.

Windows 7 uefi