Merge branch 'master' into 3leaf

src/Makefile.housekeeping

 allroms allzroms : all%s : $(foreach ROM,$(ROMS),$(BIN)/$(ROM).%)
 all%s : $(foreach DRIVER,$(DRIVERS),$(BIN)/$(DRIVER).%)
 
+# Alias for gpxe.%
+#
+$(BIN)/etherboot.% : $(BIN)/gpxe.%
+	ln -sf $(notdir $<) $@
+
 # The compression utilities
 #
 $(NRV2B) : util/nrv2b.c $(MAKEDEPS)

src/arch/i386/interface/pcbios/int13.c

 
 	/* Assign drive number if none specified, update BIOS drive count */
 	get_real ( num_drives, BDA_SEG, BDA_NUM_DRIVES );
-	if ( ! drive->drive )
-		drive->drive = ( num_drives | 0x80 );
+	if ( ( drive->drive & 0xff ) == 0xff )
+		drive->drive = num_drives;
+	drive->drive |= 0x80;
 	num_drives++;
 	if ( num_drives <= ( drive->drive & 0x7f ) )
 		num_drives = ( ( drive->drive & 0x7f ) + 1 );