MBR_BS_MAGIC
#define LE_MBR_BS_MAGIC htole16(MBR_BS_MAGIC)
if (new_mbr.mbr_bootsel_magic != htole16(MBR_BS_MAGIC))
if (mbrs->mbr_bootsel_magic == htole16(MBR_BS_MAGIC)) {
} else if (mbrs->mbr_bootsel_magic == htole16(MBR_BS_MAGIC)) {
if (mbri->mbr.mbr_bootsel_magic == htole16(MBR_BS_MAGIC)