From 15968d07824907c2038ba460b1417b59d8ab985a Mon Sep 17 00:00:00 2001
From: Keith Nash <Spearfoot@users.noreply.github.com>
Date: Tue, 14 Mar 2017 11:32:52 -0500
Subject: [PATCH] Add files via upload

---
 disk-burnin.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/disk-burnin.sh b/disk-burnin.sh
index f26d995..52f04ee 100644
--- a/disk-burnin.sh
+++ b/disk-burnin.sh
@@ -71,6 +71,12 @@
 # Dry_Run variable below, setting it to 0, in order to actually perform
 # tests on drives.
 # 
+# Before using the script on FreeBSD systems (including FreeNAS) you must
+# first execute this sysctl command to alter the kernel's geometry debug
+# flags. This allows badblocks to write to the entire disk:
+#
+#   sysctl kern.geom.debugflags=0x10
+# 
 # Tested under:
 #   FreeNAS 9.10.2 (FreeBSD 10.3-STABLE)
 #   Ubuntu Server 16.04.2 LTS