I used Windows Back Up. At this point, I identified what looked like the back up folder (HOMEVISTA), I moved it to my c: drive temporarily to see if anything else is affected. So far, so good. It appears that the Recovery files may be in Dell/Image folder. There are other folders on the drive but I'm leaving them along.
Thanks for your help.
Since I do not plan to touch the Recovery drive d: again it's of no consequence, but there are other folders other than the Dell/Image folder such as Tools, Users, Windows, etc. Do you know if the back up created these folders or are they part of the original Recovery files?