Ah, good old 5.25" floppies, long live the 5.25" floppies.
Interestingly I found that the 5.25" floppies were more reliable than their 3.5" brethren, I used to get a lot of read/write errors with 3.5" stiffies.
It was so bad at one stage that I used to copy a driver onto three or four stiffies, reasoning that if one develops read errors, then there'll be three more to try.
Keep in mind this was before USB memory sticks. And lugging an Iomega Zip-100 parallel port external around was not an option...
Ahhh, the good old days.
And the trick where you punched a hole into the stiffy to make it double its size from 720Kb to 1.44Mb...
There also was an utility called FDFormat (DOS) which did weird tricks to squeeze in more space on an existing 1.2Mb floppy or 1.44Mb stiffy. I preferred to use plain vanilla DOS format as I was not sure whether data will be safe or not.