When I boot into my laptop, bootmgr refuses to boot Win8.1SE x64, claiming 'digital signature is wrong'.
However, testing in VMware with ISO works fine. Also, EFI is not affected since it doesn't use winload.exe.
For temporary measure, I copied my host's (Win 8.1 x64 Korean) winload.exe into PE, then it works fine.
Has any ideas? I can't guess why only in real machine this problem appears.