document that -B may blow away important bits (on i386 it blows away MBR)

diff --git a/sbin/disklabel/disklabel.8 b/sbin/disklabel/disklabel.8
index 3f6d82a..56cd38e 100644 (file)
--- a/sbin/disklabel/disklabel.8
+++ b/sbin/disklabel/disklabel.8
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: disklabel.8,v 1.2 1996/06/23 14:30:05 deraadt Exp $
+.\"    $OpenBSD: disklabel.8,v 1.3 1997/02/11 21:50:16 deraadt Exp $
 .\"    $NetBSD: disklabel.8,v 1.9 1995/03/18 14:54:38 cgd Exp $
 .\"
 .\" Copyright (c) 1987, 1988, 1991, 1993
@@ -302,7 +302,9 @@ The boot code comes from
 .Pa /usr/mdec/sdboot
 and possibly
 .Pa /usr/mdec/bootsd .
-On-disk and in-core labels are unchanged.
+On-disk and in-core labels are unchanged, but on some systems other information
+may be destroyed.
+Use with care.
 .Pp
 .Dl disklabel -w -B /dev/rsd0c -b newboot sd2212
 .Pp