I recently got an used Amiga 500 Rev 6a. It's in good condition. I had nothing to fix so far.
Because it's pretty much the first thing they tell you, I tried to duplicate the Workbench floppy.

So I fire up Workbench and I start by single clicking the floppy icon and use the duplicate feature in the Workbench menu. The program DiskCopy runs through and finishes, but when I take a look onto the copy, there is nothing else than an empty Expansion drawer showing in the window? I also tried to boot from it, but it immediately stops at the AmigaDOS screen and doesn't do anything. Absolutely no command works.

I have tried this a couple of times with known good diskettes.

I don't really want to get a replacement drive and I don't have another way to copy diskettes atm.