diff --git a/new_partition/partition_data.py b/new_partition/partition_data.py
index 5cb8151..0608a78 100755
--- a/new_partition/partition_data.py
+++ b/new_partition/partition_data.py
@@ -381,12 +381,25 @@ def delete_all_partitions(d, k):
     for key in d[k]['partition'].keys():
         d[k]['partition'].pop(key, None)
 
+    _device = _ped.device_get(k)
+    _disk = _ped.Disk(_device)
+	'''find the end !meta parititon end as disks end '''
+    _part = _disk.next_partition()
+    while _part:
+		if _part.type & 8:
+			_part = _disk.next_partition(_part)
+			continue
+		p_g = _part.geom
+		end = _device.unit_format_byte((p_g.end + 1) * _device.sector_size - 1)
+		_part = _disk.next_partition(_part)
+
+
     partition = 'free 1'
-    sz = se = d[k]['disk_size']
+    sz = d[k]['disk_size']
     d[k]['partition'][partition]['sn']= 1
     d[k]['partition'][partition]['num']= 1
     d[k]['partition'][partition]['start'] = '0'
-    d[k]['partition'][partition]['end'] = se
+    d[k]['partition'][partition]['end'] = end
     d[k]['partition'][partition]['size'] = sz
     d[k]['partition'][partition]['type'] = ''
     d[k]['partition'][partition]['filesystem'] = ''
@@ -450,7 +463,7 @@ if __name__ == "__main__":
     #for d in Partition.get_raid_devices():
     #    print d
     #print Partition.dict.keys()
-    pretty(Partition.dict)
+    #pretty(Partition.dict)
     #print Partition.unit
     #write_to_xml_file()
     #disks = Partition.dict.keys()
@@ -464,6 +477,7 @@ if __name__ == "__main__":
     #init_from_xml()
     #pretty(Partition.dict)
     #delete_all_partitions(Partition.dict, "/dev/sda")
+    #delete_all_partitions(Partition.dict, "/dev/sdf")
     #delete_one_partition(Partition.dict, "/dev/sdb", "free 1")
     #pretty(Partition.dict)
     #print sort_partitions(Partition.dict, "/dev/sda", "all")