diff --git a/target/linux/x86/base-files/etc/init.d/mdadm_hack b/target/linux/x86/base-files/etc/init.d/mdadm_hack
new file mode 100755
index 0000000000..19d438634f
--- /dev/null
+++ b/target/linux/x86/base-files/etc/init.d/mdadm_hack
@@ -0,0 +1,10 @@
+#!/bin/sh /etc/rc.common
+# work around mdadm create /dev/md* fail
+# Copyright (C) 2022 jjm2473
+
+START=12
+
+boot() {
+	[ -f /proc/mdstat ] || modprobe md_mod
+	mount --bind /dev/full /sys/module/md_mod/parameters/new_array
+}