Most of us never give much thought to what is happening in the background when copying files from one location to another, we simply complete the task and move on. But is there an extra copy left behind that we are unaware of? With that in mind, today’s SuperUser Q&A post has the answer to a curious reader’s question.

Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.

Screenshot courtesy of Arik (Flickr).

The Question

SuperUser reader BattlFrog wants to know if the Windows cache retains a copy when copying files between two USB flash drives:

Does the Windows cache retain a copy when copying files between two USB flash drives?

The Answer

SuperUser contributors EEAA and Abraxas have the answer for us. First up, EEAA:

Followed by the answer from Abraxas:

Have something to add to the explanation? Sound off in the comments. Want to read more answers from other tech-savvy Stack Exchange users? Check out the full discussion thread here.