diff --git a/README.md b/README.md
index 9a55701..d37fca4 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,30 @@
 # zfs
 
+```bash
+#check status
+zpool status
+```
+
+```bash
+#check smart status
+smartctl -a /dev/sdX
+```
+
+```bash
+#pool list
+zpool list -o name
+```
+
+```bash
+# scrup pool
+zpool scrub poolname
+```
+
+## health degrated
+
+First check if not smart errors
+
+```bash
+# clear errors on zfs pool
+zpool clear poolname
+```