Mikke,

Thanks for the reply. If it is hidden files (I do have them set globally to display), they're still being tallied inconsistently, depending if you check properties for a disk icon in "This PC" or after you have selected/highlighted everything in the root directory of the same disk. The former appears to be accurate. The large discrepancies I'm experiencing would seem to indicate something else is in play. I don't think it's a mundane worry but, maybe, something to be aware of for critical storage considerations.

In any event, thanks for taking the time to think about it and respond.

Paj
8^)