diff --git a/pym/cl_builder.py b/pym/cl_builder.py
index d6477c7..793e8fd 100644
--- a/pym/cl_builder.py
+++ b/pym/cl_builder.py
@@ -244,24 +244,18 @@ class cl_builder(color_print):
                   distrPath)
         self.printByResult(True);
 
-    def prepareSourceDistributive(self,distr):
-        """Unmount all bind,proc mount points from source distribute"""
-        mp = self.clVars.Get('cl_builder_path')
-        mps = filter(lambda x:x!=mp,map(lambda x:x[1],childMounts(mp)))
-        for target in sorted(mps, reverse=True):
-            self.printMessageForTest(_("Unmounting %s")%(target[len(mp):]))
-            umountProcess = process("umount",target)
-            if umountProcess.failed():
-                raise BuilderError(_("Failed to unmount %s")%target)
-            self.printByResult(True)
-        distrPath = distr.convertToDirectory().getDirectory()
-        self.clVars.Set('cl_builder_squash_path',
-                        os.path.basename(os.path.normpath(distrPath)))
-        self.cleanNeedlessKernelData(distrPath)
-        self.dispatchConf(distrPath)
-
-        builderPath = self.clVars.Get('cl_builder_path')
+    def updatePortage(self,builderPath):
+        """Change branch to master and update portage"""
         if self.assembleIso:
+            # restore resolv conf if needed
+            resolvFile = "etc/resolv.conf"
+            if not path.exists(path.join(builderPath,resolvFile)):
+                if path.exists('/%s'%resolvFile):
+                    try:
+                        shutil.copyfile('/%s'%resolvFile,
+                                        path.join(builderPath,resolvFile))
+                    except:
+                        pass
             for gitName,gitDir in (('portage','/usr/portage'),
                            ('overlay','/var/lib/layman/calculate')):
                 gitHead = pathJoin(builderPath,gitDir,".git/HEAD")
@@ -271,17 +265,36 @@ class cl_builder(color_print):
                         _("Changing {repname} repository branch to '{branch}'").
                             format(repname=gitName,
                                    branch='master'))
-                    changeBranch = self.runChroot(distrPath,
+                    changeBranch = self.runChroot(builderPath,
                         "cd %s;git pull;git checkout master;git pull"%gitDir)
                     self.printByResult(changeBranch.success())
 
             self.printMessageForTest(_("Updating portage"))
-            updateMeta = self.runChroot(distrPath,"emerge --sync")
+            updateMeta = self.runChroot(builderPath,"emerge --sync")
             self.printByResult(updateMeta.success())
 
+    def prepareSourceDistributive(self,distr):
+        """Unmount all bind,proc mount points from source distribute"""
+        mp = self.clVars.Get('cl_builder_path')
+        self.dispatchConf(mp)
+        self.updatePortage(mp)
+
+        # unmount all from source distribute
+        mps = filter(lambda x:x!=mp,map(lambda x:x[1],childMounts(mp)))
+        for target in sorted(mps, reverse=True):
+            self.printMessageForTest(_("Unmounting %s")%(target[len(mp):]))
+            umountProcess = process("umount",target)
+            if umountProcess.failed():
+                raise BuilderError(_("Failed to unmount %s")%target)
+            self.printByResult(True)
+        distrPath = distr.convertToDirectory().getDirectory()
+        self.clVars.Set('cl_builder_squash_path',
+                        os.path.basename(os.path.normpath(distrPath)))
+        self.cleanNeedlessKernelData(distrPath)
+
         self.applyTemplatesForSquash(distrPath)
         # change make.profile
-        curProfileFile = pathJoin(builderPath,"etc/make.profile")
+        curProfileFile = pathJoin(mp,"etc/make.profile")
         self.curProfile = os.readlink(curProfileFile)
         profile = self.clVars.Get('os_builder_profile')
         newProfile = None