I installed the Secure Storage Administrator and was able to use the default key to Encrypt the Storage Card. But I am trying to understand a few extra things about this utility:
 

Is there a way to be able to delete or un-encrypt this storage card?
Is it normal that when I connect a PC to the ET1 I cannot see the Storage Card anymore since I encrypted the whole card?
I am assuming it is best practice to only encrypt a specific folder on the Storage Card, and to tell the application to write to that folder only?
If I was to put a new SD card (un-encrypted) in the slot and re-boot the device, would the Secure Storage Administartor see the volume again and encrypt it?

 
Thank you.