Deployment / Installation Quick Start: Unify 'dd' commands to create USB install media

Use bs of 4M and show progress

Author: cwickert

xml/art_installation-sleds.xml

@@ -120,7 +120,7 @@
      Use the following command to copy the contents of the installation image
      to a removable flash disk.
     </para>
-<screen>&prompt.sudo;dd if=<replaceable>IMAGE</replaceable> of=<replaceable>FLASH_DISK</replaceable> bs=4M &amp;&amp; sync</screen>
+<screen>&prompt.sudo;dd if=<replaceable>IMAGE</replaceable> of=<replaceable>FLASH_DISK</replaceable> bs=4M status=progress &amp;&amp; sync</screen>
     <para>
      <replaceable>IMAGE</replaceable> needs to be replaced with the path to the
      <filename>&installmedia;</filename> or <filename>&packagemedia;</filename>

xml/deployment_images_procedure.xml

@@ -88,7 +88,8 @@
    <para>
     Copy the decompressed image to the device where &slema; will run:
    </para>
-<screen>&prompt.user;dd if=<replaceable>DOWNLOADED_IMAGE.raw</replaceable> of=/dev/sd<replaceable>X</replaceable></screen>
+<screen>&prompt.user;dd if=<replaceable>DOWNLOADED_IMAGE.raw</replaceable> of=/dev/sd<replaceable>X</replaceable> bs=4M status=progress &amp;&amp; sync</screen>
+
   </step>
  </procedure>
 </section>

xml/deployment_prep_aarch64_media.xml

@@ -75,7 +75,7 @@
        copy the ISO to the device using the <command>dd</command>. The flash
        disk must not be mounted, and all data on the device will be erased.
       </para>
-<screen>&prompt.root;<command>dd</command> if=<replaceable>PATH_TO_ISO_IMAGE</replaceable> of=<replaceable>USB_STORAGE_DEVICE</replaceable> bs=4M</screen>
+<screen>&prompt.root;<command>dd</command> if=<replaceable>PATH_TO_ISO_IMAGE</replaceable> of=<replaceable>USB_STORAGE_DEVICE</replaceable> bs=4M status=progress &amp;&amp; sync</screen>
       <para os="slemicro">
        If you are deploying raw images, you need to prepare the configuration
        device. For details refer to <xref linkend="cha-images-procedure"/>.