If you have added some media files, movies or songs, your music app or gallery wont show the newly added files until something called Media scanning has done. Some firmware’s will begin media scanning right after you copy media files to your SD card, but some wont. So, When your reboot your phone, media scanner will automatically run on the start-up and new files will be cached by the applications and it will be listed.

But rebooting the device every time you added one or two files is time consuming and does not seems to be a great way. How to run media scanner manually?. There are few free apps in the android market to run media scanner manually. These apps generally need no root access.. Some of them are,

How to Start media scanner manually using Rescan Media

  1. Download the app and install from the link
  2. launch the application by taping the icon from menu.
  3. The app will start to scan media files as soon as you run it. No need of touch to start.

rescan

 

For CyanogenMod users, no application is needed to manually run media scanner. You should possibly have “Dev Tools” in menu. Open it, scroll down to find ‘Media Scanner’. Tap it to begin scanning.

Cyanogenmod dev tools media scaner

UPDATE:

Recently I have found a better app for scanning the media manually. The app is called “media.Re.Scan: media scanner for android2.3 to 7.1“. This application will let you choose the type of content you want to be scanned  y=by the android OS. Suppose if you have added an image which doesn’t show up, you don’t have to scan each and every files in your memory.

This saves a lot of time. All you have to do is install the app from play store, select the category you want to scan. There are four types of files you cam trigger a scan for. Those are music, image, movie and everything else. You have an option to close the app right after you trigger the scan so that media scan will happen in background while you can use your phone for other things.

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