1 files changed, 4 insertions, 1 deletions
diff --git a/installer/installer.py b/installer/installer.py
index f84df062..6d4ac297 100755
--- a/installer/installer.py
+++ b/installer/installer.py
@@ -113,7 +113,10 @@ class BaserockInstaller():
     def do_unmounts(self, to_unmount):
         for path in reversed(to_unmount):
             print 'Unmounting %s' % path
-            subprocess.Popen(['umount', path])
+            try:
+                subprocess.check_call(['umount', path])
+            except:
+                print 'WARNING: Failed to `umount %s`' % path
 
     def check_and_read_config(self, config_file):
         print "Reading configuration from %s..." % config_file