diff --git a/install.sh b/install.sh
index 0f0101a..cca2e77 100644
--- a/install.sh
+++ b/install.sh
@@ -102,9 +102,16 @@ echo "Install: Creating partition table..."
 SYSTEM="$TMP/sys.img"
 SYSTEM_SIZE="4954537983"
 
+# Check free diskspace
+SPACE=$(df --output=avail -B 1 "$TMP" | tail -n 1)
+
+if (( SYSTEM_SIZE > SPACE )); then
+  echo "ERROR: Not enough free space to create virtual system disk." && exit 87
+fi
+
 if ! fallocate -l "${SYSTEM_SIZE}" "${SYSTEM}"; then
   rm -f "${SYSTEM}"
-  echo "ERROR: Not enough free space to create virtual disk." && exit 88
+  echo "ERROR: Could not allocate file for virtual system disk." && exit 88
 fi
 
 PART="$TMP/partition.fdisk"