From fe1f6c1b3d571ba6ea4726e175f62689901719a4 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Tue, 7 May 2019 11:41:33 +0200
Subject: plan9.ini(8), boot(8): clarify the use of $rootdir and $rootspec

---
 sys/man/8/boot      | 14 +++++++++++---
 sys/man/8/plan9.ini | 16 +++++++++++++++-
 2 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/sys/man/8/boot b/sys/man/8/boot
index 261346cfe..c1c8b5a99 100644
--- a/sys/man/8/boot
+++ b/sys/man/8/boot
@@ -127,15 +127,23 @@ password:
 .PP
 Once connected,
 .I boot
-mounts
-the root file system before
-.B /
+mounts the root file system at
+.B /root
+(with the optional mount spec argument from
+.BR $rootspec )
 and makes the connection available as
 .B #s/boot
 for subsequent processes to
 .B mount
 (see
 .IR bind (2)).
+It then binds
+.B /root
+(or the value specified by
+.BR $rootdir )
+after the
+.BR /
+directory.
 .I Boot
 completes by 
 .IR exec (2)'ing
diff --git a/sys/man/8/plan9.ini b/sys/man/8/plan9.ini
index 96ff418fd..a684860c9 100644
--- a/sys/man/8/plan9.ini
+++ b/sys/man/8/plan9.ini
@@ -691,10 +691,24 @@ See
 for more.
 .SS \fLnobootprompt=\fIvalue\fP
 Suppress the
-.L "root from"
+.L bootargs
 prompt and use
 .I value
 as the answer instead.
+.SS \fLrootdir=\fB/root/\fIdir\fP
+.SS \fLrootspec=\fIspec\fP
+Changes the mount arguments for the root file server
+that was specified by
+.I bootargs
+above.
+By changing
+.I dir
+in
+.BR $rootdir ,
+a different sub-directory on the root file server
+can be used as the system root. see
+.IR boot (8)
+for details.
 .SS \fLuser=\fIvalue\fP
 Suppress the
 .L "user"
-- 
cgit v1.2.3