diff --git a/libblkid/src/partitions/unixware.c b/libblkid/src/partitions/unixware.c
new file mode 100644
index 0000000..6742bcf
--- /dev/null
+++ b/libblkid/src/partitions/unixware.c
@@ -0,0 +1,197 @@
+/*
+ * unixware partition parsing code
+ *
+ * Copyright (C) 2009 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ *
+ *
+ * The intersting information about unixware PT:
+ *   - Linux kernel / partx
+ *   - vtoc(7) SCO UNIX command man page
+ *   - evms source code (http://evms.sourceforge.net/)
+ *   - vxtools source code (http://martin.hinner.info/fs/vxfs/)
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "partitions.h"
+
+/* disklabel location */
+#define UNIXWARE_SECTOR		29
+#define UNIXWARE_OFFSET		(UNIXWARE_SECTOR << 9)	/* offset in bytes */
+#define UNIXWARE_KBOFFSET	(UNIXWARE_OFFSET >> 10)	/* offset in 1024-blocks */
+
+/* disklabel->d_magic offset within the last 1024 block */
+#define UNIXWARE_MAGICOFFSET	(UNIXWARE_OFFSET - UNIXWARE_KBOFFSET + 4)
+
+#define UNIXWARE_VTOCMAGIC	0x600DDEEEUL
+#define UNIXWARE_MAXPARTITIONS	16
+
+/* unixware_partition->s_label flags */
+#define UNIXWARE_TAG_UNUSED       0x0000  /* unused partition */
+#define UNIXWARE_TAG_BOOT         0x0001  /* boot fs */
+#define UNIXWARE_TAG_ROOT         0x0002  /* root fs */
+#define UNIXWARE_TAG_SWAP         0x0003  /* swap fs */
+#define UNIXWARE_TAG_USER         0x0004  /* user fs */
+#define UNIXWARE_TAG_ENTIRE_DISK  0x0005  /* whole disk */
+#define UNIXWARE_TAG_ALT_S        0x0006  /* alternate sector space */
+#define UNIXWARE_TAG_OTHER        0x0007  /* non unix */
+#define UNIXWARE_TAG_ALT_T        0x0008  /* alternate track space */
+#define UNIXWARE_TAG_STAND        0x0009  /* stand partition */
+#define UNIXWARE_TAG_VAR          0x000a  /* var partition */
+#define UNIXWARE_TAG_HOME         0x000b  /* home partition */
+#define UNIXWARE_TAG_DUMP         0x000c  /* dump partition */
+#define UNIXWARE_TAG_ALT_ST       0x000d  /* alternate sector track */
+#define UNIXWARE_TAG_VM_PUBLIC    0x000e  /* volume mgt public partition */
+#define UNIXWARE_TAG_VM_PRIVATE   0x000f  /* volume mgt private partition */
+
+
+/* unixware_partition->s_flags flags */
+#define UNIXWARE_FLAG_VALID	0x0200
+
+struct unixware_partition {
+	uint16_t	s_label;	/* partition label (tag) */
+	uint16_t	s_flags;	/* permission flags */
+	uint32_t	start_sect;	/* starting sector */
+	uint32_t	nr_sects;	/* number of sectors */
+} __attribute__((packed));
+
+struct unixware_disklabel {
+	uint32_t	d_type;		/* drive type */
+	uint32_t	d_magic;	/* the magic number */
+	uint32_t	d_version;	/* version number */
+	char		d_serial[12];	/* serial number of the device */
+	uint32_t	d_ncylinders;	/* # of data cylinders per device */
+	uint32_t	d_ntracks;	/* # of tracks per cylinder */
+	uint32_t	d_nsectors;	/* # of data sectors per track */
+	uint32_t	d_secsize;	/* # of bytes per sector */
+	uint32_t	d_part_start;	/* # of first sector of this partition */
+	uint32_t	d_unknown1[12];	/* ? */
+	uint32_t	d_alt_tbl;	/* byte offset of alternate table */
+	uint32_t	d_alt_len;	/* byte length of alternate table */
+	uint32_t	d_phys_cyl;	/* # of physical cylinders per device */
+	uint32_t	d_phys_trk;	/* # of physical tracks per cylinder */
+	uint32_t	d_phys_sec;	/* # of physical sectors per track */
+	uint32_t	d_phys_bytes;	/* # of physical bytes per sector */
+	uint32_t	d_unknown2;	/* ? */
+	uint32_t	d_unknown3;	/* ? */
+	uint32_t	d_pad[8];	/* pad */
+
+	struct unixware_vtoc {
+		uint32_t	v_magic;	/* the magic number */
+		uint32_t	v_version;	/* version number */
+		char		v_name[8];	/* volume name */
+		uint16_t	v_nslices;	/* # of partitions */
+		uint16_t	v_unknown1;	/* ? */
+		uint32_t	v_reserved[10];	/* reserved */
+
+		struct unixware_partition
+			v_slice[UNIXWARE_MAXPARTITIONS]; /* partition */
+	} __attribute__((packed)) vtoc;
+};
+
+static int probe_unixware_pt(blkid_probe pr,
+		const struct blkid_idmag *mag __attribute__((__unused__)))
+{
+	struct unixware_disklabel *l;
+	struct unixware_partition *p;
+	blkid_parttable tab = NULL;
+	blkid_partition parent;
+	blkid_partlist ls;
+	int i;
+
+	l = (struct unixware_disklabel *)
+			blkid_probe_get_sector(pr, UNIXWARE_SECTOR);
+	if (!l) {
+		if (errno)
+			return -errno;
+		goto nothing;
+	}
+
+	if (le32_to_cpu(l->vtoc.v_magic) != UNIXWARE_VTOCMAGIC)
+		goto nothing;
+
+	if (blkid_partitions_need_typeonly(pr))
+		/* caller does not ask for details about partitions */
+		return BLKID_PROBE_OK;
+
+	ls = blkid_probe_get_partlist(pr);
+	if (!ls)
+		goto nothing;
+
+	parent = blkid_partlist_get_parent(ls);
+
+	tab = blkid_partlist_new_parttable(ls, "unixware", UNIXWARE_OFFSET);
+	if (!tab)
+		goto err;
+
+	/* Skip the first partition that describe whole disk
+	 */
+	for (i = 1, p = &l->vtoc.v_slice[1];
+			i < UNIXWARE_MAXPARTITIONS; i++, p++) {
+
+		uint32_t start, size;
+		uint16_t tag, flg;
+		blkid_partition par;
+
+		tag = le16_to_cpu(p->s_label);
+		flg = le16_to_cpu(p->s_flags);
+
+		if (tag == UNIXWARE_TAG_UNUSED ||
+		    tag == UNIXWARE_TAG_ENTIRE_DISK ||
+		    flg != UNIXWARE_FLAG_VALID)
+			continue;
+
+		start = le32_to_cpu(p->start_sect);
+		size = le32_to_cpu(p->nr_sects);
+
+		if (parent && !blkid_is_nested_dimension(parent, start, size)) {
+			DBG(LOWPROBE, ul_debug(
+				"WARNING: unixware partition (%d) overflow "
+				"detected, ignore", i));
+			continue;
+		}
+
+		par = blkid_partlist_add_partition(ls, tab, start, size);
+		if (!par)
+			goto err;
+
+		blkid_partition_set_type(par, tag);
+		blkid_partition_set_flags(par, flg);
+	}
+
+	return BLKID_PROBE_OK;
+
+nothing:
+	return BLKID_PROBE_NONE;
+err:
+	return -ENOMEM;
+}
+
+
+/*
+ * The unixware partition table is within primary DOS partition.  The PT is
+ * located on 29 sector, PT magic string is d_magic member of 'struct
+ * unixware_disklabel'.
+ */
+const struct blkid_idinfo unixware_pt_idinfo =
+{
+	.name		= "unixware",
+	.probefunc	= probe_unixware_pt,
+	.minsz		= 1024 * 1440 + 1,		/* ignore floppies */
+	.magics		=
+	{
+		{
+		  .magic = "\x0D\x60\xE5\xCA",	/* little-endian magic string */
+		  .len = 4,			/* d_magic size in bytes */
+		  .kboff = UNIXWARE_KBOFFSET,
+		  .sboff = UNIXWARE_MAGICOFFSET
+		},
+		{ NULL }
+	}
+};
+