diff --git a/ChangeLog b/ChangeLog
index a367f6891..0ab95813a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-07-17  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* include/grub/bsdlabel.h (GRUB_PC_PARTITION_BSD_LABEL_WHOLE_DISK_PARTITION): New definition.
+	* partmap/bsdlabel.c (bsdlabel_partition_map_iterate): Use FreeBSD
+	delta determination style. Works with most NetBSD partitions too.
+
 2010-07-17  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* kern/partition.c [GRUB_UTIL]: Add missing util/misc.h inclusion.
diff --git a/include/grub/bsdlabel.h b/include/grub/bsdlabel.h
index d88b25353..636bd41a1 100644
--- a/include/grub/bsdlabel.h
+++ b/include/grub/bsdlabel.h
@@ -63,6 +63,8 @@
 #define	GRUB_PC_PARTITION_OPENBSD_TYPE_NTFS	18
 #define	GRUB_PC_PARTITION_OPENBSD_TYPE_RAID	19
 
+#define GRUB_PC_PARTITION_BSD_LABEL_WHOLE_DISK_PARTITION 2
+
 /* The BSD partition entry.  */
 struct grub_partition_bsd_entry
 {
diff --git a/partmap/bsdlabel.c b/partmap/bsdlabel.c
index f671f76d8..a27b8eaec 100644
--- a/partmap/bsdlabel.c
+++ b/partmap/bsdlabel.c
@@ -41,9 +41,6 @@ bsdlabel_partition_map_iterate (grub_disk_t disk,
   grub_disk_addr_t delta = 0;
   unsigned pos;
 
-  /* BSDLabel offsets are absolute even when it's embed inside partition.  */
-  delta = grub_partition_get_start (disk->partition);
-
   /* Read the BSD label.  */
   if (grub_disk_read (disk, GRUB_PC_PARTITION_BSD_LABEL_SECTOR,
 		      0, sizeof (label), &label))
@@ -53,6 +50,24 @@ bsdlabel_partition_map_iterate (grub_disk_t disk,
   if (label.magic != grub_cpu_to_le32 (GRUB_PC_PARTITION_BSD_LABEL_MAGIC))
     return grub_error (GRUB_ERR_BAD_PART_TABLE, "no signature");
 
+  /* A kludge to determine a base of be.offset.  */
+  if (GRUB_PC_PARTITION_BSD_LABEL_WHOLE_DISK_PARTITION
+      < grub_cpu_to_le16 (label.num_partitions))
+    {
+      struct grub_partition_bsd_entry whole_disk_be;
+
+      pos = sizeof (label) + GRUB_PC_PARTITION_BSD_LABEL_SECTOR
+	* GRUB_DISK_SECTOR_SIZE + sizeof (struct grub_partition_bsd_entry)
+	* GRUB_PC_PARTITION_BSD_LABEL_WHOLE_DISK_PARTITION;
+
+      if (grub_disk_read (disk, pos / GRUB_DISK_SECTOR_SIZE,
+			  pos % GRUB_DISK_SECTOR_SIZE, sizeof (whole_disk_be),
+			  &whole_disk_be))
+	return grub_errno;
+
+      delta = grub_le_to_cpu32 (whole_disk_be.offset);
+    }
+
   pos = sizeof (label) + GRUB_PC_PARTITION_BSD_LABEL_SECTOR
     * GRUB_DISK_SECTOR_SIZE;
 
@@ -62,6 +77,9 @@ bsdlabel_partition_map_iterate (grub_disk_t disk,
     {
       struct grub_partition_bsd_entry be;
 
+      if (p.number == GRUB_PC_PARTITION_BSD_LABEL_WHOLE_DISK_PARTITION)
+	continue;
+
       p.offset = pos / GRUB_DISK_SECTOR_SIZE;
       p.index = pos % GRUB_DISK_SECTOR_SIZE;
 
@@ -78,7 +96,7 @@ bsdlabel_partition_map_iterate (grub_disk_t disk,
 		    (unsigned long long) p.start,
 		    (unsigned long long) p.len);
 
-      if (be.fs_type == GRUB_PC_PARTITION_BSD_TYPE_UNUSED)
+      if (p.len == 0)
 	continue;
 
       if (p.start < delta)