diff --git a/repos/libports/run/libc_vfs_filesystem_test.inc b/repos/libports/run/libc_vfs_filesystem_test.inc
index ee71558a3c..a96c485da1 100644
--- a/repos/libports/run/libc_vfs_filesystem_test.inc
+++ b/repos/libports/run/libc_vfs_filesystem_test.inc
@@ -154,6 +154,19 @@ append config {
 
 install_config $config
 
+#
+# Prepare hard-disk image for test (used by Qemu or in RAM)
+#
+
+set disk_image "bin/test.hda"
+set cmd "dd if=/dev/zero of=$disk_image bs=1024 count=65536"
+puts "creating disk image: $cmd"
+catch { exec sh -c $cmd }
+
+set cmd "$mkfs_cmd $mkfs_opts $disk_image"
+puts "formating disk: $cmd"
+catch { exec sh -c $cmd }
+
 #
 # Boot modules
 #
@@ -174,19 +187,6 @@ build_boot_image $boot_modules
 
 puts "#### boot_modules: $boot_modules"
 
-#
-# Execute test case
-#
-
-set disk_image "bin/test.hda"
-set cmd "dd if=/dev/zero of=$disk_image bs=1024 count=65536"
-puts "creating disk image: $cmd"
-catch { exec sh -c $cmd }
-
-set cmd "$mkfs_cmd $mkfs_opts $disk_image"
-puts "formating disk: $cmd"
-catch { exec sh -c $cmd }
-
 #
 # Qemu
 #