diff --git a/board/czechlight/common/overlay/etc/fstab b/board/czechlight/common/overlay/etc/fstab
new file mode 100644
index 0000000..92681bd
--- /dev/null
+++ b/board/czechlight/common/overlay/etc/fstab
@@ -0,0 +1,3 @@
+/dev/root / auto ro 0 1
+tmpfs /var tmpfs mode=1777 0 0
+tmpfs /.ov tmpfs mode=0700 0 0