Signagelive Help Centre

Working with the Windows Embedded EWF Manager?

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If you have ever wondered why your changes to your Samsung or LG device are not being saved after a reboot, or what the EWFMGR shortcut on your Windows Desktop is, then that will be EWF Manager tool. The EWF Manager tool is supplied on the majority of Samsung and LG builds and by default will be set to be enabled, which means the feature is active straight away from when you first power the device on.

EWF_Overview_Image.jpg


So what does the EWF Manager do?

The EWF features gives you a method in protecting your hardware drives from changes and writes to the hard disks. The benefit of this is that it allows the Operating System to return to a previously stored build each and every time the hardware player is rebooted; which is a great way of falling back to a working state if an unrecoverable error has occurred. Usually the Samsung builds come with two hardware drives (C:/ and D:/) and the C:/ drive is commonly the drive with the EWF applied.

If the EWF Manager is enabled and you make changes to your hardware without rebooting, then these changes are cached in the overlay and made available as part of the drive. For that moment in time if appears that the drive is writeable to, but these changes will be lost at the point of the next reboot process if the EWF is enabled on the player.


How can we view the state of the EWF on our player?

If you would like to check the current state of the EWF Manager on your player then you can do so with the following steps:

  1. Click on the Start button on your player.
  2. Please now select the Run option and at the command prompt type cmd
  3. You will now be presented with a black command prompt window and within this will need to type – ewfmgr c:
  4. This will now return a series of results and will tell you the current state of the EWF.
State_of_the_EWF.jpg
 

From using this command and getting the returned list you will also see an option named Boot Command. It is this option that clarifies what the reboot state of the player will be with EWF; if it says NO_CMD it will mean no changes have been committed. If you have disabled the EWF, committed this change and not rebooted as yet, then the Boot Command information will say Disabled.


Useful EWFMGR commands to use

To use any of the following commands then you will need to firstly navigate to the command prompt window with the following steps:

  1. Click on the Start button on your player.
  2. Please now select the Run option and at the command prompt type cmd
  3. You will now be presented with a black command prompt window and begin typing the following commands:
    • ewfmgr.exe c: -Enable -- Enables the EWF from the DOS prompt.
    • ewfmgr.exe c: -Disable -- Disables the EWF from the DOS prompt.
    • ewfmgr.exe c: -NoCmd  -- Clears the state of the Boot Command.
    • ewfmgr.exe c: -Commit  -- Commits any changes made to the EWF.
  4. Please note that in the case of LG devices the command should be ewfmgr C: -commitanddisable

Where should a user put their Signagelive folders on such a Samsung Player?

On Samsung players that have the EWF Manager we recommend that users put specific Signagelive folders on the D:/ drive within the Signagelive configuration tool. The folders you will need to set on the D:/ drive are: Media, Playlist, Temp and Logs. To change the media storage settings on your Signagelive player you will need to carry out the following steps:

  1. Within your players Window Desktop, click on the Start button and then select Programs.
  2. Please now click on the Signagelive folder and then click Signagelive configuration.signagelive_configuration_menu.jpg signagelive_configuration_tool.jpg
  3. The Signagelive configuration tool will now load and you will soon be presented with three options, please click the Advanced option.
  4. You will now be on the “How would you like signagelive to run on your Computer?” window, please click the Next button to proceed.On_your_computer.jpg
  5. You will now be on the “Windows Logon” screen, please click the Next button to proceed.Windows_Logon.jpg
  6. You will now be on the “Media Storage” window and need to click the Edit Media Storage Settings tick box.
  7. You will now be prompted with a Modify Storage Locations button which you will need to read and confirm to proceed.Media_Storage_Window.jpg Modify_Storage_Locations.jpg
  8. The Media, Playlist, Temp and Logs sections will now become available and you will need to click the adjacent Select Folder button.
  9. When you have clicked Select Folder you will now be presented with a Browse for Folder window and you will need to select where you’d like the Media, Playlist, Temp or Logs to be placed on your computer.
  10. Browse_for_Folder.jpg  Media_Storage_Window_with_Changes.jpg
  11. When you have gone through all four options, you can then click the Next button to proceed.Media_Storage_Window_with_saved_Changes.jpg
  12. On the final step you will need to click the Save Settings button to save your Media Storage settings.
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