What's all the fuss about? What's the big deal?
MS-DOS 2.11--running a 3.5" floppy drive--is alive and well, in ROM, on my 1987 Toshiba T1000 laptop; bought brand-new--along with a $295, 512K RAM upgrade--and is still brand-new.
The other best investment I ever made was the 5.25" floppy-drive peripheral for it, which allows me to say to my friends--who bemoan the fact that they can't read (or write, of course) any of their legacy 5.25" floppies which they may still have for some reason--"You can't!? What's the problem?"
I'm not ever touching the original, but one of these days I'm going to put a back-light on the screen of the second--or perhaps the third--of the back-up devices I bought.
The T1000 in conjunction with reading Van Wolverton's book was how I learned DOS--and 'edlin'. No wasted youth there!