title: Can't mount SD card as write permissions in android
body: <p>I'm using the below command to mount sd card in adb shell window, which returns an error:</p>
  
  <pre><code># mount -rw -t vfat /tmp/udev/dev/mmcblk0p1 /tmp/new
  mount: Device or resource busy
  </code></pre>
  
  <p>what might be the issue?</p>
  
  <p>But when I'm mounting it as read only using the below command I could able to read the contents of SD card.</p>
  
  <pre><code># mount -r -t vfat /tmp/udev/dev/mmcblk0p1 /tmp/new
  </code></pre>