Actually it is possible to recover deleted files. Not 100% sure what happens when a file is deleted, but I think it is just marked as available free space though the file is still there until it gets overwritten. I have tried programs from Tenorshare and Wondershare, they do work, the problem is it seems they only seem to do a very quick scan. The reason why I want to mount the iPad as a drive on a Windows or Mac computer is so I can run a desktop data recovery program on it and do a very thorough scan.