title: Adb Shell: when I run mount rw /system the smartphone reboots
body: <p>My problem regards the mount of the /system directory of Android, particularly when I try to do it with my Sony Xperia L.</p>
  
  <p>I try to use this command after get su permission</p>
  
  <pre><code>mount -o remount,rw /system
  </code></pre>
  
  <p>initially it seems to work but after few second the phone reboots.
  The same command on Nexus 5 works.</p>
  
  <p>I try also these commands that I found <a href="https://stackoverflow.com/questions/10294808/android-mount-the-filesystem-with-write-permission">here</a> but the result is the same:</p>
  
  <pre><code>mount -o rw,remount -t yaffs2 /dev/block/mmcblk0p9 /system
  mount -o rw,remount -t ext4 /system
  </code></pre>
  
  <p>The phone is rooted and I get su permission before make it.</p>