diff --git a/xorriso/emulators.c b/xorriso/emulators.c
index 1a9c88fa..89885905 100644
--- a/xorriso/emulators.c
+++ b/xorriso/emulators.c
@@ -619,6 +619,7 @@ int Xorriso_genisofs_count_args(struct XorrisO *xorriso, int argc, char **argv,
     "-partition_sec_hd", "-partition_cyl_align", "-untranslated_name_len",
     "-rr_reloc_dir", "-hfsplus-serial-no", "-prep-boot-part", "-efi-boot-part",
     "-hfsplus-block-size", "-apm-block-size", "--grub2-mbr",
+    "--grub2-sparc-core",
     ""
  };
  static char arg2_options[][41]= {
@@ -834,6 +835,7 @@ int Xorriso_genisofs_help(struct XorrisO *xorriso, int flag)
 "  -mipsel-boot FILE           Set mipsel boot image name (relative to image root)",
 "  -B FILES, -sparc-boot FILES Set sparc boot image names",
 "  -sparc-label label text     Set sparc boot disk label",
+"  --grub2-sparc-core FILE     Set path of core file for disk label patching",
 "  -efi-boot-part DISKFILE|--efi-boot-image",
 "                              Set data source for EFI System Partition",
 "  -chrp-boot-part             Mark ISO image size by MBR partition type 0x41",
@@ -1911,10 +1913,21 @@ not_enough_args:;
      }
 
    } else if(strcmp(argpt, "-sparc-label") == 0) {
+     if(i+1>=argc)
+       goto not_enough_args;
      i++;
      strncpy(xorriso->ascii_disc_label, argv[i], Xorriso_disc_label_sizE - 1);
      xorriso->ascii_disc_label[Xorriso_disc_label_sizE - 1] = 0;
 
+   } else if(strcmp(argpt, "--grub2-sparc-core") == 0) {
+     if(i+1>=argc)
+       goto not_enough_args;
+     i++;
+     sprintf(sfe, "grub2_sparc_core=%s", argv[i]);
+     ret= Xorriso_option_boot_image(xorriso, "any", sfe, 0);
+     if(ret <= 0)
+       goto problem_handler_2;
+
    } else if(strcmp(argpt, "--stdio_sync")==0) {
      if(i+1>=argc)
        goto not_enough_args;
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 31dbf06b..93678829 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2013.04.13.205230"
+#define Xorriso_timestamP "2013.04.13.205450"