docs: Make note of i386-pc specific usage of halt command

The --no-apm option is only available on the i396-pc target.

Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

diff --git a/docs/grub.texi b/docs/grub.texi
index 8397febba3a27c4166b40df2e8057b5e06aa2b63..7739332162832a9d6eff920a3b8ba5a252ec774f 100644 (file)
--- a/docs/grub.texi
+++ b/docs/grub.texi
@@ -4567,10 +4567,10 @@ type are omitted, then the partition will be inactive.
 @node halt
 @subsection halt
 
-@deffn Command halt @option{--no-apm}
-The command halts the computer. If the @option{--no-apm} option
-is specified, no APM BIOS call is performed. Otherwise, the computer
-is shut down using APM.
+@deffn Command halt [@option{--no-apm}[
+The command halts the computer. On the i386-pc target, the @option{--no-apm}
+option, or short @option{-n}, is specified, no APM BIOS call is performed.
+Otherwise, the computer is shut down using APM on that target.
 @end deffn