diff --git a/pythonrewrite/bin/cryptobox.conf b/pythonrewrite/bin/cryptobox.conf
index 42c1af5..d60f9dc 100644
--- a/pythonrewrite/bin/cryptobox.conf
+++ b/pythonrewrite/bin/cryptobox.conf
@@ -2,14 +2,15 @@
 
 # comma separated list of possible prefixes for accesible devices
 # beware: .e.g "/dev/hd" grants access to _all_ harddisks
-AllowedDevices = /dev/loop
+AllowedDevices = /dev/loop, /dev/ubdb
 
 
 # the default name prefix of not unnamed containers
 DefaultVolumePrefix = "Data "
 
 # which cipher should cryptsetup-luks use?
-DefaultCipher = aes-cbc-essiv:sha256
+#TODO: uml does not support this module - DefaultCipher = aes-cbc-essiv:sha256
+DefaultCipher = aes-plain
 
 # label of the configuration partition (you should never change this)
 ConfigVolumeLabel = cbox_config
diff --git a/pythonrewrite/bin/uml-setup.sh b/pythonrewrite/bin/uml-setup.sh
index f299de7..8826f3d 100755
--- a/pythonrewrite/bin/uml-setup.sh
+++ b/pythonrewrite/bin/uml-setup.sh
@@ -1,8 +1,9 @@
 #!/bin/sh
 
-ROOT_IMG=~/devel-stuff/devel-chroots/cryptobox.img
+ROOT_IMG=/home/lars/devel-stuff/devel-chroots/cryptobox.img
 TEST_IMG=test.img
 TEST_SIZE=256
+MEM_SIZE=128M
 
 # Preparations:
 #  echo "tun" >>/etc/modules
@@ -18,5 +19,5 @@ if [ ! -e "$TEST_IMG" ]
 			dd if=/dev/zero of="$TEST_IMG" bs=1M count=$TEST_SIZE
   fi
 
-linux ubd0="$ROOT_IMG" ubd1="$TEST_IMG" con=xterm hostfs=../ fakehd eth0=daemon
+linux ubd0="$ROOT_IMG" ubd1="$TEST_IMG" con=xterm hostfs=../ fakehd eth0=daemon mem=$MEM_SIZE