drac crashed, this is how to recover

howto/new-machine-cymru.md

@@ -310,7 +310,23 @@ Current status is shown with:
 
     racadm serveraction powerstatus
 
-This should be good enough to get us started.
+This should be good enough to get us started. See also the [upstream
+documentation](https://www.dell.com/support/manuals/en-ca/idrac7-8-lifecycle-controller-v2.50.50.50/idrac_2.50.50.50_racadm/serveraction?guid=guid-69ea52c5-153d-4369-b7c4-6694a3b9e0d4&lang=en-us).
+
+### Reseting the iDRAC
+
+It can happen that the management interface gets hung. In my case it
+happened when I left a virtual machine disappear while connected to the
+iDRAC console overnight. The problem was that the web console login
+would just hang on "Verifying credentials".
+
+The workaround is to reset the RAC with:
+
+    racadm racreset soft
+
+If that's not good enough, try `hard` instead of soft, see also the
+(rather not much more helpful, I'm afraid) [upstream
+documentation](https://www.dell.com/support/manuals/en-ca/idrac7-8-lifecycle-controller-v2.50.50.50/idrac_2.50.50.50_racadm/racreset?guid=guid-69ea52c5-153d-4369-b7c4-6694a3b9e0d4&lang=en-us).
 
 ### Other documentation