I have an android tablet and have link2sd installed on it so there's room to install what I want on it.  This works fine, however I have to have the ext3 partition with the same data on multiple sd cards I use in the tablet.  I once heard about an app that creates an image file on the part of the internal sd card the user has access to and mounts that image file instead of a partition on the external card.

Does anyone know of an app that will do this?  I have looked for weeks and not found it again.  Also how would I go about creating the image file myself and configuring the tablet to use it?

I would like to be able to change sd cards without having to shut down the tablet or having to repartition them.

Thanks to anyone who can help.

Derek
-- 
"I get my copy of the daily paper, look at the obituaries page, and if I’m not there, I carry on as usual."

Patrick Moore