diff --git a/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_hierarchy b/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_hierarchy
index bf9ae4789..d3e6f1445 100644
--- a/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_hierarchy
+++ b/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_hierarchy
@@ -109,7 +109,7 @@ check:rc==0
 
 # Check node can be rebooted from disk
 cmd:xdsh $$CN shutdown -r now
-cmd:sleep 360
+cmd:sleep 420
 cmd:xdsh $$CN uptime
 check:rc==0
 check:output=~up