[arch-general] Win 10 Dual boot nightmare

[Murari]

Hi Zachary,

I have an HP laptop as well, and I think the problem you're facing is that
neither HP nor Windows are good EFI citizens. On the HP laptop that I have,
for instance, the EFI boot manager does not respect any global NVRAM
variables except for BootNext. Default, BootOrder etc. are all ignored (I
edited them using the efibootmgr tool on Arch, so it wasn't Windows that
changed them back). In addition, it seems to be hardcoded to only boot the
windows boot manager.

The only workaround I was able to find was to physically move around the
.efi files in the EFI partition. I renamed the windows EFI application -
$EFI\Microsoft\Boot\bootmgfw.efi by default, replaced it with the
systemd-boot bootx64.efi (as in the last section of the wiki article [1])
and then added an entry to systemd-boot to boot Windows from its new,
renamed, application path. This shouldn't lock you out of Windows, but it
is also easily reversed in case something goes wrong.

[1]
https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface#UEFI_boot_loader_does_not_show_up_in_firmware_menu


Murari