diff --git a/install/variables/disk.py b/install/variables/disk.py
index b586dbd..6796156 100644
--- a/install/variables/disk.py
+++ b/install/variables/disk.py
@@ -59,6 +59,15 @@ class DeviceHelper:
         return map(lambda x:getUdevDeviceInfo(name=x).get(prop,default),
                self.Get(var))
 
+    def getPerfectName(self,device):
+        info = getUdevDeviceInfo(name=device)
+        if 'DM_VG_NAME' in info and 'DM_LV_NAME' in info:
+            lvmDeviceName = '/dev/{vg}/{lv}'.format(vg=info['DM_VG_NAME'],
+                                                    lv=info['DM_LV_NAME'])
+            if path.exists(lvmDeviceName):
+                return lvmDeviceName
+        return info.get('DEVNAME','')
+
 #######################################################
 # Devices variables
 #######################################################
@@ -299,6 +308,10 @@ class VariableOsDiskDev(ReadonlyVariable,DeviceHelper):
                             path.join(self.sysBlockPath,x)),
                disks),[]))),key=self.separateDevice))
 
+    def humanReadable(self):
+        return map(self.getPerfectName,
+               self.Get())
+
 class VariableOsDiskMount(ReadonlyVariable,DeviceHelper):
     """
     List mounted points for current operation system
@@ -577,7 +590,7 @@ class VariableOsLocationData(LocationHelper,TableVariable):
                  "to specify the source directory as DISK")
         self.label = _("Locations")
 
-class VariableOsLocationSource(LocationHelper,Variable):
+class VariableOsLocationSource(LocationHelper,DeviceHelper,Variable):
     """
     Source disk or directory
     """
@@ -616,7 +629,9 @@ class VariableOsLocationSource(LocationHelper,Variable):
             return self.availDevs()
 
     def choice(self):
-        return self.fixOsDiskDev(self.availDevs(choice=True)) + [""]
+        return map(lambda x:(x,self.getPerfectName(x) or x),
+            self.fixOsDiskDev(self.availDevs(choice=True))) \
+            + [("","")]
 
     def fixOsDiskDev(self,sourcelist=None):
         """