[v2 1/2] doc: Explain significance of partition labels.

[Leo Famulari <leo@famulari.name>]

* doc/guix.texi (Preparing for Installation): Point out relationship
between partition labels and the file-system configuration.
---
 doc/guix.texi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/guix.texi b/doc/guix.texi
index 06d70ba..152a713 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -16,6 +16,7 @@ Copyright @copyright{} 2013 Nikita Karetnikov@*
 Copyright @copyright{} 2015 Mathieu Lirzin@*
 Copyright @copyright{} 2014 Pierre-Antoine Rault@*
 Copyright @copyright{} 2015 Taylan Ulrich Bayırlı/Kammer
+Copyright @copyright{} 2015 Leo Famulari
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
@@ -5456,6 +5457,13 @@ reliably refer to them in @code{file-system} declarations (@pxref{File
 Systems}).  This is typically done using the @code{-L} option of
 @command{mkfs.ext4} and related commands.
 
+Be sure that your partition labels match the value of their respective
+@code{device} fields in your @code{file-system} configuration, if your
+@code{file-system} configuration sets the value of @code{title} to
+@code{'label}, as do the example configurations found on the USB
+installation image under @file{/etc/configuration} (@pxref{Using the
+Configuration System}).
+
 @c FIXME: Uncomment this once GRUB fully supports encrypted roots.
 @c A typical command sequence may be:
 @c
-- 
2.6.2