'sfunny...I immediately glommed onto the drive lettering convention (and the generalities of maneuvering around the filesystem) on the PC when I switched. Even though the HD I upgraded to when I got the PC was 3x bigger, I didn't feel compelled to have the mess of partitions everyone kept suggesting I have for my piddly little 60mb HD in my 1200, plus "C" (vs. DH0, DH1, DF0, DF1 etc. ad nauseam) just made more sense to me.
I think I'm extremely lucky to have gotten into PCs when I did - you can go back and read Info World online, going all the way back to 1980, and yes, really until around 1994/1995, IBM clones (and Mac systems but to a lesser degree) were shit. As it was the box I built when I sold my Amiga gear, while not great, was the best combination of gear for the easiest transition from the Amiga to the PC I could ask for - and indeed in many ways simpler. I had a 2x CD-ROM drive, 170mb HD, DOS6.22 and Windows 3.11. As lousy as Win3.11 was, many things in it "just worked". For me, anyway.
Had I "grown up" with PCs I probably wouldn't feel that way.