On an external drive, the delete key is more of a suggestion than a final verdict. Files that appear to vanish from a USB stick, portable SSD, or backup hard drive often linger in the background, ...
I purchased a Sandisk Cruzer Micro 4GB drive from Costco about 2 weeks ago. It worked great for a week so I dumped a bunch of stuff on it - software, documents, etc. Now most of that stuff is still ...