diff --git a/stage4/00-install-packages/00-debconf b/stage4/00-install-packages/00-debconf
index 9b65dda..87932e2 100644
--- a/stage4/00-install-packages/00-debconf
+++ b/stage4/00-install-packages/00-debconf
@@ -1,4 +1,2 @@
 # Enable realtime process priority?
 jackd2  jackd/tweak_rt_limits   boolean true
-# Do you accept the Wolfram - Raspberry Pi® Bundle License Agreement?
-wolfram-engine  shared/accepted-wolfram-eula    boolean true
diff --git a/stage4/00-install-packages/00-packages b/stage4/00-install-packages/00-packages
index c3783b4..80625b6 100644
--- a/stage4/00-install-packages/00-packages
+++ b/stage4/00-install-packages/00-packages
@@ -7,7 +7,6 @@ python3-pgzero
 python-serial python3-serial
 python-picamera python3-picamera
 debian-reference-en dillo x2x
-wolfram-engine
 raspberrypi-net-mods raspberrypi-ui-mods
 smartsim penguinspuzzle
 python-pip python3-pip
diff --git a/stage4/EXPORT_IMAGE b/stage4/EXPORT_IMAGE
index 2b0f09d..ee20363 100644
--- a/stage4/EXPORT_IMAGE
+++ b/stage4/EXPORT_IMAGE
@@ -1 +1 @@
-IMG_SUFFIX=""
+IMG_SUFFIX="-4GB"
diff --git a/stage5/00-install-mathematica/00-debconf b/stage5/00-install-mathematica/00-debconf
new file mode 100644
index 0000000..d9743fe
--- /dev/null
+++ b/stage5/00-install-mathematica/00-debconf
@@ -0,0 +1,2 @@
+# Do you accept the Wolfram - Raspberry Pi® Bundle License Agreement?
+wolfram-engine  shared/accepted-wolfram-eula    boolean true
diff --git a/stage5/00-install-mathematica/00-packages b/stage5/00-install-mathematica/00-packages
new file mode 100644
index 0000000..fa9ba94
--- /dev/null
+++ b/stage5/00-install-mathematica/00-packages
@@ -0,0 +1 @@
+wolfram-engine
diff --git a/stage5/EXPORT_IMAGE b/stage5/EXPORT_IMAGE
new file mode 100644
index 0000000..2b0f09d
--- /dev/null
+++ b/stage5/EXPORT_IMAGE
@@ -0,0 +1 @@
+IMG_SUFFIX=""
diff --git a/stage4/EXPORT_NOOBS b/stage5/EXPORT_NOOBS
similarity index 100%
rename from stage4/EXPORT_NOOBS
rename to stage5/EXPORT_NOOBS
diff --git a/stage5/prerun.sh b/stage5/prerun.sh
new file mode 100755
index 0000000..a5ea5f4
--- /dev/null
+++ b/stage5/prerun.sh
@@ -0,0 +1,4 @@
+#!/bin/bash -e
+if [ ! -d ${ROOTFS_DIR} ]; then
+	copy_previous
+fi