Quote Originally Posted by amendalus View Post
As henrypscheffler writes, you need a data recovery tool to regain your photos back as long as you have not rewritten the original data. Do not save new data on this SD card and connect it to a computer or laptop via a card Reader.
And then, download data recovery software to restore your photos back. There are plenty of data recovery tools. You should cautiously select a right one.
Run the software several times so that you could restore the largest amount of your data.
At last, save your recovered data on a different card or drive in case of recovery failure.
Important note: The rewritten data can be erased forever. You should remember not to put new file to rewrite the original data.
Let me explain what I was looking for with the two unix commands. First the correct name of the filesystem mounted, that was DPS 2. Also, the permissions on the mount suggest the the filesystem is MSDOS. The second command confirms that the .Trashes directory exists. Now it's time to loose the command line with one last command. If any files are still in the .Trashes folder then you can retrieve them thru the GUI ->

open /Volumes/DPS\ 2/.Trashes
Good luck!