diff --git a/xorriso/base_obj.c b/xorriso/base_obj.c
index 4a4851d8..16b8d700 100644
--- a/xorriso/base_obj.c
+++ b/xorriso/base_obj.c
@@ -268,6 +268,7 @@ int Xorriso_new(struct XorrisO ** xorriso,char *progname, int flag)
    m->appended_part_types[i]= 0;
  }
  m->ascii_disc_label[0]= 0;
+ m->grub2_sparc_core[0]= 0;
  memset(m->hfsp_serial_number, 0, 8);
  m->hfsp_block_size= 0;
  m->apm_block_size= 0;
diff --git a/xorriso/iso_img.c b/xorriso/iso_img.c
index 207ca272..b7169ce5 100644
--- a/xorriso/iso_img.c
+++ b/xorriso/iso_img.c
@@ -499,6 +499,10 @@ int Xorriso_boot_status_non_mbr(struct XorrisO *xorriso, IsoImage *image,
    Text_shellsafe(xorriso->ascii_disc_label, line, 1);
    strcat(line, "\n");
    Xorriso_status_result(xorriso, filter, fp, flag & 2);
+   sprintf(line, "-boot_image grub grub2_sparc_core=");
+   Text_shellsafe(xorriso->grub2_sparc_core, line, 1);
+   strcat(line, "\n");
+   Xorriso_status_result(xorriso, filter, fp, flag & 2);
    return(0);
  }
  if(sa_type != 1 && sa_type != 2)
diff --git a/xorriso/opts_a_c.c b/xorriso/opts_a_c.c
index 64375778..f5171212 100644
--- a/xorriso/opts_a_c.c
+++ b/xorriso/opts_a_c.c
@@ -852,7 +852,7 @@ treatment_patch:;
    Xorriso_add_mips_boot_file(xorriso, "", 1); /* give up MIPS boot files */
 
  } else if(strncmp(treatpt, "sparc_label=", 12) == 0) {
-   sprintf(eff_path, "-boot_image %s sparc_path=", formpt);
+   sprintf(eff_path, "-boot_image %s sparc_label=", formpt);
    ret= Xorriso_coordinate_system_area(xorriso, 3, 0, eff_path, 0);
    if(ret <= 0)
      goto ex;
@@ -860,6 +860,12 @@ treatment_patch:;
            Xorriso_disc_label_sizE - 1);
    xorriso->ascii_disc_label[Xorriso_disc_label_sizE - 1] = 0;
 
+ } else if(strncmp(treatpt, "grub2_sparc_core=", 17) == 0) {
+   ret= Xorriso_normalize_img_path(xorriso, xorriso->wdi, treatpt + 17,
+                                     xorriso->grub2_sparc_core, 2);
+   if(ret <= 0)
+     goto ex;
+
  } else if(strncmp(treatpt, "boot_info_table=", 16)==0) {
    if(strcmp(treatpt + 16, "off") == 0)
      xorriso->patch_isolinux_image= (xorriso->patch_isolinux_image & ~3) | 0;
diff --git a/xorriso/write_run.c b/xorriso/write_run.c
index 0830aaa8..e3db9c60 100644
--- a/xorriso/write_run.c
+++ b/xorriso/write_run.c
@@ -311,9 +311,37 @@ int Xorriso_set_system_area(struct XorrisO *xorriso, struct burn_drive *drive,
  unsigned char *ub;
  ElToritoBootImage *bootimg;
  IsoFile *bootimg_node;
+ IsoNode *sparc_core_node;
  uint32_t offst;
  enum burn_disc_status state;
 
+ if(xorriso->grub2_sparc_core[0]) {
+   ret= Xorriso_node_from_path(xorriso, img, xorriso->grub2_sparc_core,
+                               &sparc_core_node, 1);
+   if(ret <= 0) {
+     sprintf(xorriso->info_text,
+             "Cannot find in ISO image: -boot_image grub grub2_sparc_core=");
+     Text_shellsafe(xorriso->grub2_sparc_core, xorriso->info_text, 1);
+     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+     {ret= 0; goto ex;}
+   }
+   if(!ISO_NODE_IS_FILE(sparc_core_node)) {
+     sprintf(xorriso->info_text,
+             "Not a data file: -boot_image grub grub2_sparc_core=");
+     Text_shellsafe(xorriso->grub2_sparc_core, xorriso->info_text, 1);
+     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+     {ret= 0; goto ex;}
+   }
+   ret = iso_image_set_sparc_core(img, (IsoFile *) sparc_core_node, 0);
+   if(ret < 0) {
+     Xorriso_process_msg_queues(xorriso,0);
+     Xorriso_report_iso_error(xorriso, "", ret,
+                    "Error when setting up -boot_image grub grub2_sparc_core=",
+                     0, "FAILURE", 1);
+     {ret= 0; goto ex;}
+   }
+ }
+
  Xorriso_alloc_meM(buf, char, 32768);
  system_area_options= xorriso->system_area_options;
  memset(buf, 0, 32768);
diff --git a/xorriso/xorriso_private.h b/xorriso/xorriso_private.h
index ddda11bb..e673f27b 100644
--- a/xorriso/xorriso_private.h
+++ b/xorriso/xorriso_private.h
@@ -443,6 +443,11 @@ struct XorrisO { /* the global context of xorriso */
  */
  char ascii_disc_label[Xorriso_disc_label_sizE];
 
+ /* A data file of which the position and size shall be written after
+    a SUN Disk Label.
+ */
+ char grub2_sparc_core[SfileadrL];
+
  /* HFS+ image serial number.
     00...00 means that it shall be generated by libisofs.
  */
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index f2a2b8f2..31dbf06b 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2013.04.13.144946"
+#define Xorriso_timestamP "2013.04.13.205230"