[gordaco]

You could also do this with RAR. I always used the same command (which I could still recite up to the last character) to create compressed files of the size of a floppy, which I believed to be exactly 1423.5 kilobytes. Then again, I'm not sure where did this number come from. I think I used the first disk I could find as a sample, but maybe that disk had some faulty sectors and the amount in a healthy disk was slightly higher.

I remember, back in the day, trying all the compressors I had at hand to see which one compressed the most. Possibly one of my first truly self-researched bit of computer knowledge... not very impressive, but then again this was the mid-90s and I was like 13. I believe that the answer was something like RAR > WinRAR > ARJ > PKZip > WinZip, with the difference between RAR and WinRAR, and between PKZip and WinZip, being very small, and the other two gaps being higher. I probably botched some settings regarding compression levels, so it's likely that I didn't use the best compression level for some of the compressors.