I'm running XP (with the 'show hidden files & folders' function checked/engaged). in wanting to clean up one of my usb removable drives and with the free version of Piriform Recuva [v126.96.36.1993] I found 2 hidden folders listed in H:\Recycled\ on my kingston 4Gb datatraveler usb flash drive. these folders are not visible in explorer.
I followed the directions below from the Piriform site: http://www.piriform.com/docs/recuva/technical-informati...
"To recover files and delete them securely:
1. Run Recuva in Advanced or in Wizard mode.
2. In the results window, select the files you want to securely delete.
3. Right-click the list and click Secure Delete Checked.
4. You are prompted to confirm the deletion. Click Yes."
said Right-click maneuver does not offer the selection "Secure Delete Checked" as stated in #3 on my PC, though I do see a choice of "Secure Overwrite".
at any rate I know the files are there and I could recover them, but apparently not delete them via Recuva freeware.