Using Eclipse for androidSDK, when I go to run, I get WARNING: Data partition already in use. Changes will not persist!

Question

I am completely new to Java, and Android, and eclipse. When doing the initial Hello, Android tutorial, I go to run and get the following:

WARNING: Data parti         


        

Answer 1

If you consider this tutorial about "Read/Write Android Emulator sdcard.img in Windows", check that this virtual disk isn't somehow already mounted:

If ImDisk complains of the file being in use, close the emulator.
They won’t run together.
Unmounting the image in Android does not allow the image to be mounted in Windows, the emulator must be shut down in order to free the image from its locked state

The OP JiminyCricket confirms it was some kind of "resource lock":

Simple restart of my OS fixed it. Thanks!