Min version	10 Pre RTM
Max version	10 TH2
x64 offset offset:bitpos	Field Name
0x0000:0x00	uint16_t UnusedBytes
0x0000	uint8_t[2] Bytes
0x0000:0x0D	uint16_t LfhSubsegment
0x0000:0x0E	uint16_t ExtraPresent
0x0000:0x0F	uint16_t OneByteUnused