BOOTSECSIG
if (ltohs(mb.signature) != BOOTSECSIG) {
if (ltohs(ubpb.mb.signature) != BOOTSECSIG) {
if (ltohs(ubpb.mb.signature) != BOOTSECSIG) {
if ((bs->bs.bs_signature[0] != (BOOTSECSIG & 0xFF) &&
bs->bs.bs_signature[1] != ((BOOTSECSIG >> 8) & 0xFF)) ||
if (ltohs(mb.signature) != BOOTSECSIG) {