title: Why system reverts to read-only after attempting push
body: <p>I'm trying to update build.prop, so far with no luck.</p>
  
  <blockquote>
    <p>C:\adb_driver2>adb reboot</p>
    
    <p>C:\adb_driver2>adb root</p>
    
    <p>C:\adb_driver2>adb remount remount succeeded</p>
    
    <p>C:\adb_driver2>adb shell mount | grep system </p>
  </blockquote>
  
  <p>/dev/block/dm-0 /system ext4 <strong>rw</strong>,seclabel,relatime,discard,data=ordered 0 0</p>
  
  <blockquote>
    <p>C:\adb_driver2>adb push c:\adb_driver\build.prop /system </p>
  </blockquote>
  
  <p>failed to copy 'c:\adb_driver\build.prop' to '/system/build.prop': Read-only file system</p>
  
  <blockquote>
    <p>C:\adb_driver2>adb shell mount | grep system </p>
  </blockquote>
  
  <p>/dev/block/dm-0 /system ext4 <strong>ro</strong>,seclabel,relatime,discard,data=ordered 0 0</p>
  
  <blockquote>
    <p>C:\adb_driver2></p>
  </blockquote>
  
  <p>Any idea why push fails and why system reverts to read-only?
  Any known workarounds?</p>
  
  <p>Thank</p>