GUID_FIRMWARE_BOOTMGR - NtDoc

#ifndef _NTBCD_H
#ifndef PHNT_INLINE_BCD_GUIDS

// A5A30FA2-3D06-4E9F-B5F4-A01DF9D1FCBA // {fwbootmgr}
DEFINE_GUID(GUID_FIRMWARE_BOOTMGR, 0xA5A30FA2, 0x3D06, 0x4E9F, 0xB5, 0xF4, 0xA0, 0x1D, 0xF9, 0xD1, 0xFC, 0xBA);

#endif
#endif
View code on GitHub

#ifndef _NTBCD_H
#ifndef PHNT_INLINE_BCD_GUIDS
// ...
#else

NTSYSAPI GUID GUID_FIRMWARE_BOOTMGR; // {fwbootmgr}

#endif
#endif
View code on GitHub