DOS‐tips

Here's a little tidbit I came up with the hard way a few weeks ago. I was backing up my hard disk, making a neat pile of diskettes as the BACKUP program filled them with data. I decided to label them (♯1, ♯2, etc.) after the BACKUP process was complete. Suddenly, an imaginary mouse skittered across my desk, followed by my very real, bounding cat. Disks flew everywhere! Once the dust settled, I realized I had a problem. Which disks were which?