[PAR35]

Hard drive? You must be a young pup.

I used SSDD 5.25 inch floppies. Just line up the index hole with the hole in the cover, and you could safely store them by thumb tacking them to your cork board.

And my father was backing up to his audio cassette drive.

[GingisK]

You are a youngster. I used 8” floppy disk when DSDD was 512k buyes.