Windows 98 "error copying file" with save states

I’m emulating windows 98 through dosbox pure in retroarch. I am playing a game called “Deadlock: Planetary Conquest” and the game makes a random map, you choose where you start on the map, and then you can save the game when it starts. I wanted to save a copy of the game where I start in different parts of the map but once you choose a starting position you cannot choose a different one.

I tried to get around this by

  1. Saving the game as a save state
  2. Choosing a starting location
  3. Saving the game file
  4. Moving the game file onto my C: drive where my emulated windows operating system is (as opposed to the game which is in it’s own file emulated as D: drive)
  5. Go back to the previous state and choose a different location
  6. Save that file
  7. Then combine both files by moving the first one out of C: onto D: but it says “error copying file” then it says “Cannot copy (file name): Access is denied. Make sure the disk is not full or write-protected and that the file ins not currently in use.”

Is there something I need to do with the file so it can be moved into my game folder on D:? I tried

  1. Clicking on the file
  2. Opening Properties
  3. Unchecking the Archive box