Wiping CF (and other) Cards
I am putting my D800 up for sale and will no longer need the CF cards. I want to wipe them clean and add them to the sales bundle. The internet and various chat groups have a number of suggestions for software which will do that (in lieu of reformatting the card). What do you do? What software do you use?
In the past I have just reformatted the card, but with the "quick format" box (Windows) unchecked. Like any format however this does not remove the original data, just the address files for accessing the data. Since all I have on these cards is images and no personal info, I don't worry about it. My understanding is that only way to wipe everything would be to write data (blank data?) to every sector on the card, thus obliterating what was there. I imagine there are utilities to do that but I have never bothered. So far I have not seen any of my photos lifted from cards I included with cameras.
I wrote up a small post on how to securely erase cards on MacOS. You can find it here - https://guerboiscafe.com/forums/tests-and-technique/securely-erasing-memory-cards-macos/