[FE training-materials-updates] Minor fixes and improvements

[Michael Opdenacker]

Repository : git://git.free-electrons.com/training-materials.git
On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=e45629f95e8aae2f081dc1f92967b2986c7706da

>---------------------------------------------------------------

commit e45629f95e8aae2f081dc1f92967b2986c7706da
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Thu Jun 15 08:58:20 2017 +0200

    Minor fixes and improvements
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>


>---------------------------------------------------------------

e45629f95e8aae2f081dc1f92967b2986c7706da
 .../sysdev-block-filesystems/sysdev-block-filesystems.tex  | 14 ++++++++------
 .../sysdev-flash-filesystems/sysdev-flash-filesystems.tex  |  2 +-
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/slides/sysdev-block-filesystems/sysdev-block-filesystems.tex b/slides/sysdev-block-filesystems/sysdev-block-filesystems.tex
index 7b6ba95..ec698b3 100644
--- a/slides/sysdev-block-filesystems/sysdev-block-filesystems.tex
+++ b/slides/sysdev-block-filesystems/sysdev-block-filesystems.tex
@@ -45,7 +45,8 @@ major minor #blocks name
    8        1    1060258 sda1
    8        2  975699742 sda2
 \end{verbatim}
-  \item And also in \code{/sys/block/}
+  \item \code{/sys/block/} also stores information about each block device,
+     for example whether is is removable storage or not.
   \end{itemize}
 \end{frame}
 
@@ -62,8 +63,8 @@ major minor #blocks name
   \item Two partition table formats:
     \begin{itemize}
     \item {\em MBR}, the legacy format
-    \item {\em GPT}, the new format, not yet used everywhere, but
-      becoming more and more common
+    \item {\em GPT}, the new format, not used everywhere yet, supporting
+      disks bigger than 2 TB.
     \end{itemize}
   \item Numerous tools to create and modify the partitions on a block
     device: \code{fdisk}, \code{cfdisk}, \code{sfdisk}, \code{parted},
@@ -117,13 +118,14 @@ major minor #blocks name
   \begin{columns}
     \column{0.6\textwidth}
     \begin{itemize}
-    \item Designed to stay in a coherent state even after system
-      crashes or a sudden poweroff
+    \item Unlike simpler filesystems (\code{ext2}, \code{vfat}...),
+      designed to stay in a coherent state even after system
+      crashes or a sudden poweroff.
     \item Writes are first described in the journal before being
       committed to files (can be all writes, or only metadata writes
       depending on the configuration)
     \item Allows to skip a full disk check at boot time after an
-      unclean shutdown
+      unclean shutdown.
     \end{itemize}
     \column{0.4\textwidth}
     \includegraphics[width=\textwidth]{slides/sysdev-block-filesystems/journal.pdf}
diff --git a/slides/sysdev-flash-filesystems/sysdev-flash-filesystems.tex b/slides/sysdev-flash-filesystems/sysdev-flash-filesystems.tex
index 1dad18c..49c387f 100644
--- a/slides/sysdev-flash-filesystems/sysdev-flash-filesystems.tex
+++ b/slides/sysdev-flash-filesystems/sysdev-flash-filesystems.tex
@@ -631,7 +631,7 @@ vol_flags=autoresize
 	Attach an MTD partition to the UBI layer
     \item \code{ubi info [layout]}\\
 	Display UBI device information\\
-	(or volume information if the \code{layout} string is passed
+	(or volume information if the \code{layout} string is passed)
     \item \code{ubi check <vol-name>}\\
 	Check if a volume exists
     \item \code{ubi readvol <dest-addr> <vol-name> [<size>]}\\