Shutdown changes for multiboot: CTRL-ALT-DEL resets, panic halts

man/man8/shutdown.8

@@ -3,7 +3,7 @@
 shutdown \- graciously close the system down
 .SH SYNOPSIS
 .B shutdown
-.RB [ \-hrRmk ]
+.RB [ \-hrRmkd ]
 .RB [ \-x
 .IR code ]
 .RI [ time-specification
@@ -60,6 +60,10 @@ to the Boot Monitor.  With
 .B \-R
 the system will receive a hardware reset.
 .TP
+.B \-d
+Default CTRL-ALT-DEL shutdown for current bootloader; drops to the boot 
+monitor is possible and resets otherwise.
+.TP
 .BI \-x " code"
 Halt the system and let the Monitor execute the given code as if typed at
 the monitor prompt.  You can for instance use