Howard wrote: "It would be more trouble than it's worth to get anything off it that was "under" the video files".
I'm curious. From my basic understanding of hard drives / files, you can't have data "under" other data. Sure, data from a file can be in several separate areas of the disk. These file segments are recorded in the FAT (File Allocation Table). When you delete a file, the FAT is updated to indicate the areas occupied by the file are available once more. If you then populate ALL these areas with new data, the old data is overwritten. To be sure you've covered all the space previously occupied by a sensitive file, you would need to fill the entire hard disk with new data (well, that's the method I was adopting).
Is my understanding correct Howard? Please explain your "under" terminology. Thanks.