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-rw-r--r--usr.bin/mkimg/mkimg.115
1 files changed, 13 insertions, 2 deletions
diff --git a/usr.bin/mkimg/mkimg.1 b/usr.bin/mkimg/mkimg.1
index 0ed0dac..ed14cc8 100644
--- a/usr.bin/mkimg/mkimg.1
+++ b/usr.bin/mkimg/mkimg.1
@@ -24,12 +24,12 @@
.\"
.\" $FreeBSD$
.\"
-.Dd July 2, 2014
+.Dd July 4, 2014
.Dt MKIMG 1
.Os
.Sh NAME
.Nm mkimg
-.Nd "utility to make a disk image"
+.Nd "utility to make disk images"
.Sh SYNOPSIS
.Nm
.Op Fl H Ar heads
@@ -40,6 +40,7 @@
.Op Fl f Ar format
.Op Fl o Ar outfile
.Op Fl v
+.Op Fl y
.Fl s Ar scheme
.Fl p Ar partition
.Op Fl p Ar partition ...
@@ -111,6 +112,16 @@ option increases the level of output that the
.Nm
utility prints.
.Pp
+The
+.Op Fl y
+option is used for testing purposes only and is not to be used in production.
+When present, the
+.Nm
+utility will generate predictable values for Universally Unique Identifiers
+(UUIDs) and time stamps so that consecutive runs of the
+.Nm
+utility will create images that are identical.
+.Pp
For a complete list of supported partitioning schemes or supported output
format, or for a detailed description of how to specify partitions, run the
.Nm
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