I wonder if floppies of any size are still available. I suppose there may be as there are still some elderly computers remaining in use. I believe I may still have a couple of dozen in both sizes left over from the old days. I sort of remember installing a 5-1/4" floppy drive in my Tandy 1000. I was thinking about another early computer I used called a Compaq. Sort of portable but the size of small suitcase. It had about an 8" monochrome display. Fairly heavy to be a portable. PITA to use.So what I'm gathering here is that holding out for a 3.5 stiffie is a lot better than making do with a 5 1/4 floppy